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#1751 2023-03-12 07:20:31

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/18 Wednesday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/12 Sunday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 035.7 Sol Number: 074  Change in degrees is +.5 Julian date is: J0037074
Solar Longitude: 035.2 Sol Number: 073  Change in degrees is +.4 Julian date is: J0037073
Solar Longitude: 034.8 Sol Number: 072  Change in degrees is +.5 Julian date is: J0037072

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   244,649,405 km [22.4 km/s] Difference is +112947 <= 4706 km/hour at 08.0 on 03/12 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   244,536,458 km [22.4 km/s] Difference is +114254 <= 4761 km/hour at 08.0 on 03/11 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   244,422,204 km [22.4 km/s] Difference is +115484 <= 4812 km/hour at 08.0 on 03/10 (time 8:00)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: Lots of choices today – Star TYC 1852-296-1 Mg 10.14 RA 05h 34m 08.8s in path and ahead of 14 hour marker on Day 0
Star below path TYC 1852-1288-1 Mg 10.26 RA 05h 31m 22.4s Day 0 between 14 and 7 hour markers – Day 1 past 7 hour marker
Star below path: TYC 1852-1835-1 Mg 11.50 RA 05h 30m 05.2s Day 0 at far left – Day 1 just past Mars – Day 2 at far right – last day for 1835
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/11 188,797,777 (increasing)
Earth Distance 2022/03/11 187,201,000 (increasing)
Earth Distance 2022/03/10 185,519,000 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 074 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 074 is Wednesday  in the Proposed Business calendar for Mars.  Sol 012 was a skip day on Earth. Year 37 Sol 49 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1752 2023-03-13 06:04:34

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/19 Thursday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/13 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 036.1 Sol Number: 075  Change in degrees is +.4 Julian date is: J0037075
Solar Longitude: 035.7 Sol Number: 074  Change in degrees is +.5 Julian date is: J0037074
Solar Longitude: 035.2 Sol Number: 073  Change in degrees is +.4 Julian date is: J0037073

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   244,756,481 km [22.4 km/s] Difference is +107076 <= 4655 km/hour at 08.0 on 03/13 (time 8:00) (23 hours)
Distance: Mars >> Sun per theskylive.com:   244,649,405 km [22.4 km/s] Difference is +112947 <= 4706 km/hour at 08.0 on 03/12 (time 8:00) Daylight
Distance: Mars >> Sun per theskylive.com:   244,536,458 km [22.4 km/s] Difference is +114254 <= 4761 km/hour at 08.0 on 03/11 (time 8:00) Savings
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Nxt up: HIP 26235 Mg 7.87 above path Day 0 above 14 hour marker
Star TYC 1852-296-1 Mg 10.14 RA 05h 34m 08.8s in path and ahead of 14 hour marker on Day 0 – Day 1 just past Mars
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/13 190,261,222 (increasing)
Earth Distance 2022/03/12 188,797,777 (increasing)
Earth Distance 2022/03/11 187,201,000 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 075 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 075 is Thursday  in the Proposed Business calendar for Mars.  Sol 012 was a skip day on Earth. Year 37 Sol 49 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1753 2023-03-14 06:37:17

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/20 Friday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/14 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 036.6 Sol Number: 076  Change in degrees is +.5 Julian date is: J0037076
Solar Longitude: 036.1 Sol Number: 075  Change in degrees is +.4 Julian date is: J0037075
Solar Longitude: 035.7 Sol Number: 074  Change in degrees is +.5 Julian date is: J0037074

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   244,866,971 km [22.4 km/s] Difference is +110490 <= 4604 km/hour at 08.0 on 03/14 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   244,756,481 km [22.4 km/s] Difference is +107076 <= 4655 km/hour at 08.0 on 03/13 (time 8:00) (23 hours)
Distance: Mars >> Sun per theskylive.com:   244,649,405 km [22.4 km/s] Difference is +112947 <= 4706 km/hour at 08.0 on 03/12 (time 8:00) Daylight
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Nxt up: HIP 26235 Mg 7.87 above path Day 0 above 14 hour marker
Star TYC 1852-296-1 Mg 10.14 RA 05h 34m 08.8s in path and ahead of 14 hour marker on Day 0 – Day 1 just past Mars
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/14 191,583,970 (increasing)
Earth Distance 2022/03/13 190,261,222 (increasing)
Earth Distance 2022/03/12 188,797,777 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 076 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 076 is Friday  in the Proposed Business calendar for Mars.  Sol 012 was a skip day on Earth. Year 37 Sol 49 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1754 2023-03-15 06:41:49

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/21 Saturday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/15 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 037.0 Sol Number: 077  Change in degrees is +.4 Julian date is: J0037077
Solar Longitude: 036.6 Sol Number: 076  Change in degrees is +.5 Julian date is: J0037076
Solar Longitude: 036.1 Sol Number: 075  Change in degrees is +.4 Julian date is: J0037075

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   244,976,173 km [22.4 km/s] Difference is +109202 <= 4550 km/hour at 08.0 on 03/15 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   244,866,971 km [22.4 km/s] Difference is +110490 <= 4604 km/hour at 08.0 on 03/14 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   244,756,481 km [22.4 km/s] Difference is +107076 <= 4655 km/hour at 08.0 on 03/13 (time 8:00) (23 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: there are many labeled objects in this section of sky! TYC 1865-2497-1 Mg 9.69 RA 05h 39m 46.7s in path Day 0 ahead of 14 hour marker
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/15 193,312,094 (increasing)
Earth Distance 2022/03/14 191,583,970 (increasing)
Earth Distance 2022/03/13 190,261,222 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 077 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 077 is Saturday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1755 2023-03-16 07:03:45

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/22 Sunday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/16 Thursday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 037.5 Sol Number: 078  Change in degrees is +.5 Julian date is: J0037078
Solar Longitude: 037.0 Sol Number: 077  Change in degrees is +.4 Julian date is: J0037077
Solar Longitude: 036.6 Sol Number: 076  Change in degrees is +.5 Julian date is: J0037076

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,084,141 km [22.4 km/s] Difference is +107968 <= 4499 km/hour at 08.0 on 03/16 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   244,976,173 km [22.4 km/s] Difference is +109202 <= 4550 km/hour at 08.0 on 03/15 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: there are many labeled objects in this section of sky! TYC 1865-2497-1 Mg 9.69 RA 05h 39m 46.7s in path Day 0 ahead of 14 hour marker
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/16 194,736,666 (increasing)
Earth Distance 2022/03/15 193,312,094 (increasing)
Earth Distance 2022/03/14 191,583,970 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 078 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 078 is Sunday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1756 2023-03-17 08:27:32

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/23 Monday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/17 Friday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 037.9 Sol Number: 079  Change in degrees is +.4 Julian date is: J0037079
Solar Longitude: 037.5 Sol Number: 078  Change in degrees is +.5 Julian date is: J0037078
Solar Longitude: 037.0 Sol Number: 077  Change in degrees is +.4 Julian date is: J0037077

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,190,730 km [22.4 km/s] Difference is +106589 <= 4441 km/hour at 08.0 on 03/17 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,084,141 km [22.4 km/s] Difference is +107968 <= 4499 km/hour at 08.0 on 03/16 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   244,976,173 km [22.4 km/s] Difference is +109202 <= 4550 km/hour at 08.0 on 03/15 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up at far left: TYC 1866-216-1 Mg 10.49 RA 05h 44m 08.2s in path Day 0 ahead of 14 hour marker
TYC 1865-2497-1 Mg 9.69 RA 05h 39m 46.7s in path Day 0 ahead of 14 hour marker – Day 1 off the screen! We are really moving!
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/17 196,027,888 (increasing)
Earth Distance 2022/03/16 194,736,666 (increasing)
Earth Distance 2022/03/15 193,312,094 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 079 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 079 is Monday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1757 2023-03-18 06:23:53

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/24 Tuesday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/18 Saturday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 038.4 Sol Number: 080  Change in degrees is +.5 Julian date is: J0037080
Solar Longitude: 037.9 Sol Number: 079  Change in degrees is +.4 Julian date is: J0037079
Solar Longitude: 037.5 Sol Number: 078  Change in degrees is +.5 Julian date is: J0037078

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,296,070 km [22.4 km/s] Difference is +106589 <= 4389 km/hour at 08.0 on 03/18 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,190,730 km [22.4 km/s] Difference is +106589 <= 4441 km/hour at 08.0 on 03/17 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,084,141 km [22.4 km/s] Difference is +107968 <= 4499 km/hour at 08.0 on 03/16 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: HIP 27173 Mg 8.44 RA 05h 45m 23.0s above path Day 0 ahead of 14 hour marker
TYC 1866-216-1 Mg 10.49 RA 05h 44m 08.2s in path Day 0 ahead of 14 hour marker – Day 1 right at Mars
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/18 197,532,222 (increasing)
Earth Distance 2022/03/17 196,027,888 (increasing)
Earth Distance 2022/03/16 194,736,666 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 080 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 080 is Tuesday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1758 2023-03-19 06:44:37

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/25 Wednesday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/19 Sunday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 038.8 Sol Number: 081  Change in degrees is +.4 Julian date is: J0037081
Solar Longitude: 038.4 Sol Number: 080  Change in degrees is +.5 Julian date is: J0037080
Solar Longitude: 037.9 Sol Number: 079  Change in degrees is +.4 Julian date is: J0037079

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,296,070 km [22.4 km/s] Difference is +106589 <= 4389 km/hour at 08.0 on 03/18 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,190,730 km [22.4 km/s] Difference is +106589 <= 4441 km/hour at 08.0 on 03/17 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,084,141 km [22.4 km/s] Difference is +107968 <= 4499 km/hour at 08.0 on 03/16 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up:  HIP 27353 Mg 6.36 RA 05h 47m 34.7s Just below path – Day 0 – below 13 hour marker
HIP 27173 Mg 8.44 RA 05h 45m 23.0s above path Day 0 ahead of 14 hour marker – Day 1 above 13 hour marker – last day for 27173
TYC 1866-216-1 Mg 10.49 RA 05h 44m 08.2s in path Day 0 ahead of 14 hour marker – Day 1 right at Mars Day 2 at edge of view – last day for 216
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/19 199,219,555 (increasing)
Earth Distance 2022/03/18 197,532,222 (increasing)
Earth Distance 2022/03/17 196,027,888 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 081 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 081 is Wednesday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1759 2023-03-20 06:05:11

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/26 Thursday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/20 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 039.3 Sol Number: 082  Change in degrees is +.5 Julian date is: J0037082
Solar Longitude: 038.8 Sol Number: 081  Change in degrees is +.4 Julian date is: J0037081
Solar Longitude: 038.4 Sol Number: 080  Change in degrees is +.5 Julian date is: J0037080

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,502,855 km [22.3 km/s] Difference is +102741 <= 4281 km/hour at 08.0 on 03/20 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,400,114 km [22.3 km/s] Difference is +###### <= 4335 km/hour at 08.0 on 03/19 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,296,070 km [22.4 km/s] Difference is +###### <= 4389 km/hour at 08.0 on 03/18 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: TYC 1866-383-1 Mg 11.06 RA 05h 51m 12.3s below path – Day 0 ahead of 13 hours marker
HIP 27353 Mg 6.36 RA 05h 47m 34.7s Just below path – Day 0 – below 13 hour marker – Day 1 past 13 hours
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/20 201,224,777 (increasing)
Earth Distance 2022/03/19 199,219,555 (increasing)
Earth Distance 2022/03/18 197,532,222 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 082 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 082 is Thursday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1760 2023-03-21 09:14:02

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/27 Friday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/21 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 039.7 Sol Number: 083  Change in degrees is +.4 Julian date is: J0037083
Solar Longitude: 039.3 Sol Number: 082  Change in degrees is +.5 Julian date is: J0037082
Solar Longitude: 038.8 Sol Number: 081  Change in degrees is +.4 Julian date is: J0037081

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,604,275 km [22.3 km/s] Difference is +101420 <= 4226 km/hour at 08.0 on 03/21 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,502,855 km [22.3 km/s] Difference is +102741 <= 4281 km/hour at 08.0 on 03/20 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,400,114 km [22.3 km/s] Difference is +###### <= 4335 km/hour at 08.0 on 03/19 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: star above path TYC 1867-2817-1 Mg 9.32 RA 05h 51m 53.8s Day 0 ahead of 13 hour marker
TYC 1866-383-1 Mg 11.06 RA 05h 51m 12.3s below path – Day 0 ahead of 13 hours marker – Day 1 ahead of 6.5 hours marker
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/21 202,066,666 (increasing)
Earth Distance 2022/03/20 201,224,777 (increasing)
Earth Distance 2022/03/19 199,219,555 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 083 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 083 is Friday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1761 2023-03-22 07:08:44

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/03/28 Saturday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/22 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

One day note: This is the last Sol of Month 3

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 040.2 Sol Number: 084  Change in degrees is +.5 Julian date is: J0037084
Solar Longitude: 039.7 Sol Number: 083  Change in degrees is +.4 Julian date is: J0037083
Solar Longitude: 039.3 Sol Number: 082  Change in degrees is +.5 Julian date is: J0037082

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,704,450 km [22.3 km/s] Difference is +100175 <= 4174 km/hour at 08.0 on 03/22 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,604,275 km [22.3 km/s] Difference is +101420 <= 4226 km/hour at 08.0 on 03/21 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,502,855 km [22.3 km/s] Difference is +102741 <= 4281 km/hour at 08.0 on 03/20 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: HIP 27858 Mg 8.47 in path Day 0 after 13 hour marker
TYC 1867-2817-1 Mg 9.32 RA 05h 51m 53.8s Day 0 ahead of 13 hour marker – Day 1 above 6.5 hour marker past Mars
TYC 1866-383-1 Mg 11.06 RA 05h 51m 12.3s below path – Day 0 ahead of 13 hours marker – Day 1 ahead of 6.5 hours marker – Day 2 past 13 Hours
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/22 203,703,222 (increasing)
Earth Distance 2022/03/21 202,066,666 (increasing)
Earth Distance 2022/03/20 201,224,777 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 084 is in Month 03 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  03 extends from Sol 057 through 084. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 084 is Saturday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 3 of 24  Quarter 1 of 4 (This month has 28 Sols)

Offline

#1762 2023-03-23 06:52:12

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/01 Sunday <<-- Days of the week offset 4 with Earth.  (count from Mars to Earth (updated 2022/12/24))

Today on Earth: 2023/03/23 Thursday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 040.6 Sol Number: 085  Change in degrees is +.4 Julian date is: J0037085
Solar Longitude: 040.2 Sol Number: 084  Change in degrees is +.5 Julian date is: J0037084
Solar Longitude: 039.7 Sol Number: 083  Change in degrees is +.4 Julian date is: J0037083

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,803,194 km [22.3 km/s] Difference is +098744 <= 4114 km/hour at 08.0 on 03/23 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,704,450 km [22.3 km/s] Difference is +100175 <= 4174 km/hour at 08.0 on 03/22 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,604,275 km [22.3 km/s] Difference is +101420 <= 4226 km/hour at 08.0 on 03/21 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: star in path: TYC 1867-3007-1 Mg 11.16 RA 05h 56m 23.6s about 20 hours ahead on Day 0
HIP 27858 Mg 8.47 in path Day 0 after 13 hour marker – Day 1 Past Mars past 6.5 hour marker
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/23 204,917,333 (increasing)
Earth Distance 2022/03/22 203,703,222 (increasing)
Earth Distance 2022/03/21 202,066,666 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 085 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 085 is Sunday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  February 15, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected March 24, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1763 2023-03-24 06:08:58

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/01 Sunday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/03/24 Friday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 041.1 Sol Number: 085  Change in degrees is +.5 Julian date is: J0037085 << Skip Day
Solar Longitude: 040.6 Sol Number: 085  Change in degrees is +.4 Julian date is: J0037085
Solar Longitude: 040.2 Sol Number: 084  Change in degrees is +.5 Julian date is: J0037084

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,900,645 km [22.3 km/s] Difference is +097451 <= 4060 km/hour at 08.0 on 03/24 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,803,194 km [22.3 km/s] Difference is +098744 <= 4114 km/hour at 08.0 on 03/23 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,704,450 km [22.3 km/s] Difference is +100175 <= 4174 km/hour at 08.0 on 03/22 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: In path: TYC 1867-2705-1 Mg 7.87 RA 05h 58m 08.4s Day 0 ahead of 13 hour marker
TYC 1867-3007-1 Mg 11.16 RA 05h 56m 23.6s about 20 hours ahead on Day 0 – Day 1 just past Mars
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/24 206,459,087 (increasing)
Earth Distance 2022/03/23 204,917,333 (increasing)
Earth Distance 2022/03/22 203,703,222 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 085 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 085 is Sunday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 15th >> 17th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1764 2023-03-25 06:13:14

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/02 Monday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/03/25 Saturday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 041.5 Sol Number: 086  Change in degrees is +.4 Julian date is: J0037086
Solar Longitude: 041.1 Sol Number: 085  Change in degrees is +.5 Julian date is: J0037085 << Skip Day
Solar Longitude: 040.6 Sol Number: 085  Change in degrees is +.4 Julian date is: J0037085

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   245,996,778 km [22.3 km/s] Difference is +96133 <= 4006 km/hour at 08.0 on 03/25 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,900,645 km [22.3 km/s] Difference is +97451 <= 4060 km/hour at 08.0 on 03/24 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,803,194 km [22.3 km/s] Difference is +98744 <= 4114 km/hour at 08.0 on 03/23 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: star in path: TYC 1868-1878-1 Mg 11.79 RA 06h 01m 04.1s Day 0 ahead of 13 hour marker
Note galaxy just past Mars in path: PGC 136074
TYC 1867-2705-1 Mg 7.87 RA 05h 58m 08.4s Day 0 ahead of 13 hour marker – Day 1 right at 13 hour marker past Mars
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/25 208,322,394 (increasing)
Earth Distance 2022/03/24 206,459,087 (increasing)
Earth Distance 2022/03/23 204,917,333 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 086 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 086 is Monday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1765 2023-03-26 06:48:39

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/03 Tuesday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/03/26 Sunday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 042.0 Sol Number: 087  Change in degrees is +.5 Julian date is: J0037087
Solar Longitude: 041.5 Sol Number: 086  Change in degrees is +.4 Julian date is: J0037086
Solar Longitude: 041.1 Sol Number: 085  Change in degrees is +.5 Julian date is: J0037085 << Skip Day

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,091,582 km [22.3 km/s] Difference is +94804 <= 3950 km/hour at 08.0 on 03/26 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,996,778 km [22.3 km/s] Difference is +96133 <= 4006 km/hour at 08.0 on 03/25 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,900,645 km [22.3 km/s] Difference is +97451 <= 4060 km/hour at 08.0 on 03/24 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: Star TYC 1868-1916-1 RA 06h 03m 33.2s Mg 11.26 Day 0 just below path and at far left in view
TYC 1868-1878-1 Mg 11.79 RA 06h 01m 04.1s Day 0 ahead of 13 hour marker – Day 1 just above Mars
Note galaxy just past Mars in path: PGC 136074 – Day 1 close to right edge of view – last day for 136074
TYC 1867-2705-1 Mg 7.87 RA 05h 58m 08.4s Day 0 ahead of 13 hour marker – Day 1 right at 13 hour marker past Mars Day 1 right at edge of view last day
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/26 209,628,333 (increasing)
Earth Distance 2022/03/25 208,322,394 (increasing)
Earth Distance 2022/03/24 206,459,087 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 087 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 087 is Tuesday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1766 2023-03-27 06:16:22

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/04 Wednesday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/03/27 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 042.4 Sol Number: 088  Change in degrees is +.4 Julian date is: J0037088
Solar Longitude: 042.0 Sol Number: 087  Change in degrees is +.5 Julian date is: J0037087
Solar Longitude: 041.5 Sol Number: 086  Change in degrees is +.4 Julian date is: J0037086

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,185,103 km [22.3 km/s] Difference is +93521 <= 3897 km/hour at 08.0 on 03/27 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,091,582 km [22.3 km/s] Difference is +94804 <= 3950 km/hour at 08.0 on 03/26 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   245,996,778 km [22.3 km/s] Difference is +96133 <= 4006 km/hour at 08.0 on 03/25 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: TYC 1868-1806-1 Mg 12.40 RA 06h 05m 01.0s just above path Day 0 ahead of 13 hour marker
Star TYC 1868-1916-1 RA 06h 03m 33.2s Mg 11.26 Day 0 just below path and at far left in view – Day 1 just below Mars
TYC 1868-1878-1 Mg 11.79 RA 06h 01m 04.1s Day 0 ahead of 13 hour marker – Day 1 just above Mars – Day 2 at far right of screen – last day for 1878
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2022/03/27 211,271,000 (increasing)
Earth Distance 2022/03/26 209,628,333 (increasing)
Earth Distance 2022/03/25 208,322,394 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 088 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 088 is Wednesday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1767 2023-03-28 07:47:53

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/05 Thursday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/03/28 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 042.9 Sol Number: 089  Change in degrees is +.5 Julian date is: J0037089
Solar Longitude: 042.4 Sol Number: 088  Change in degrees is +.4 Julian date is: J0037088
Solar Longitude: 042.0 Sol Number: 087  Change in degrees is +.5 Julian date is: J0037087

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,277,157 km [22.3 km/s] Difference is +92054 <= 3836 km/hour at 08.0 on 03/28 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,185,103 km [22.3 km/s] Difference is +93521 <= 3897 km/hour at 08.0 on 03/27 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,091,582 km [22.3 km/s] Difference is +94804 <= 3950 km/hour at 08.0 on 03/26 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: Galaxy just above path: PGC 136085 RA 06h 06m 58.7s Day 0 ahead of 13 hour marker
TYC 1868-1806-1 Mg 12.40 RA 06h 05m 01.0s just above path Day 0 ahead of 13 hour marker – Day 1 at 6.5 hour marker
Star TYC 1868-1916-1 RA 06h 03m 33.2s Mg 11.26 Day 0 just below path and at far left in view – Day 1 just below Mars  Day 2 past 13 hour marker
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2023/03/28 212,562,222 (increasing)
Earth Distance 2023/03/27 211,271,000 (increasing)
Earth Distance 2023/03/26 209,628,333 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 089 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 089 is Thursday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1768 2023-03-29 06:49:52

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/06 Friday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/03/29 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 043.3 Sol Number: 090  Change in degrees is +.4 Julian date is: J0037090
Solar Longitude: 042.9 Sol Number: 089  Change in degrees is +.5 Julian date is: J0037089
Solar Longitude: 042.4 Sol Number: 088  Change in degrees is +.4 Julian date is: J0037088

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,367,925 km [22.3 km/s] Difference is +90768 <= 3782 km/hour at 08.0 on 03/29 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,277,157 km [22.3 km/s] Difference is +92054 <= 3836 km/hour at 08.0 on 03/28 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,185,103 km [22.3 km/s] Difference is +93521 <= 3897 km/hour at 08.0 on 03/27 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: HIP 29158 Mg 8.57 in path RA 06h 09m 02.3s Day 0 ahead of 13 hour marker
Galaxy just above path: PGC 136085 RA 06h 06m 58.7s Day 0 ahead of 13 hour marker – Day 1 past 6.5 hour marker past Mars
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2023/03/29 214,108,745 (increasing)
Earth Distance 2023/03/28 212,562,222 (increasing)
Earth Distance 2023/03/27 211,271,000 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 090 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 090 is Friday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1769 2023-03-30 06:01:13

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/07 Saturday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/03/30 Thursday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 043.8 Sol Number: 091  Change in degrees is +.5 Julian date is: J0037091
Solar Longitude: 043.3 Sol Number: 090  Change in degrees is +.4 Julian date is: J0037090
Solar Longitude: 042.9 Sol Number: 089  Change in degrees is +.5 Julian date is: J0037089

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,457,344 km [22.2 km/s] Difference is +##### <= 3726 km/hour at 08.0 on 03/30 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,367,925 km [22.2 km/s] Difference is +90768 <= 3782 km/hour at 08.0 on 03/29 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,277,157 km [22.3 km/s] Difference is +92054 <= 3836 km/hour at 08.0 on 03/28 (time 8:00) (24 hours)
===

Report is abbreviated due to lack of available time.

(th)

Offline

#1770 2023-03-31 06:07:54

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/08 Sunday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/03/31 Friday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 044.2 Sol Number: 092  Change in degrees is +.4 Julian date is: J0037092
Solar Longitude: 043.8 Sol Number: 091  Change in degrees is +.5 Julian date is: J0037091
Solar Longitude: 043.3 Sol Number: 090  Change in degrees is +.4 Julian date is: J0037090

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,545,395 km [22.2 km/s] Difference is +88051 <= 3669 km/hour at 08.0 on 03/31 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,457,344 km [22.2 km/s] Difference is +##### <= 3726 km/hour at 08.0 on 03/30 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,367,925 km [22.2 km/s] Difference is +90768 <= 3782 km/hour at 08.0 on 03/29 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: HIP 29158 Mg 8.57 in path RA 06h 09m 02.3s Day 0 ahead of 13 hour marker
Galaxy just above path: PGC 136085 RA 06h 06m 58.7s Day 0 ahead of 13 hour marker – Day 1 past 6.5 hour marker past Mars
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2023/03/31 216,806,666 (increasing)
Earth Distance 2023/03/29 214,108,745 (increasing)
Earth Distance 2023/03/28 212,562,222 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 092 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 092 is Sunday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1771 2023-04-01 06:16:33

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/09 Monday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/04/01 Saturday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 044.7 Sol Number: 093  Change in degrees is +.5 Julian date is: J0037093
Solar Longitude: 044.2 Sol Number: 092  Change in degrees is +.4 Julian date is: J0037092
Solar Longitude: 043.8 Sol Number: 091  Change in degrees is +.5 Julian date is: J0037091

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,632,095 km [22.2 km/s] Difference is +86700 <= 3613 km/hour at 08.0 on 04/01 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,545,395 km [22.2 km/s] Difference is +88051 <= 3669 km/hour at 08.0 on 03/31 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,457,344 km [22.2 km/s] Difference is +##### <= 3726 km/hour at 08.0 on 03/30 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: Star above path TYC 1881-1194-1 RA 06h 16m 31.5s Day 0 at far left
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2023/04/01 218,315,888 (increasing)
Earth Distance 2023/03/31 216,806,666 (increasing)
Earth Distance 2023/03/29 214,108,745 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 12 and 13 minutes. Communications delay would be 24+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 093 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 093 is Monday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1772 2023-04-02 06:04:45

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/10 Tuesday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/04/02 Sunday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 045.1 Sol Number: 094  Change in degrees is +.1 Julian date is: J0037094
Solar Longitude: 044.7 Sol Number: 093  Change in degrees is +.5 Julian date is: J0037093
Solar Longitude: 044.2 Sol Number: 092  Change in degrees is +.4 Julian date is: J0037092

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,717,443 km [22.2 km/s] Difference is +85348 <= 3556 km/hour at 08.0 on 04/02 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,632,095 km [22.2 km/s] Difference is +86700 <= 3613 km/hour at 08.0 on 04/01 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,545,395 km [22.2 km/s] Difference is +88051 <= 3669 km/hour at 08.0 on 03/31 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: Star above path TYC 1881-1194-1 RA 06h 16m 31.5s Day 0 at far left
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2023/04/02 220,386,666 (increasing)
Earth Distance 2023/04/01 218,315,888 (increasing)
Earth Distance 2023/03/31 216,806,666 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 12 and 13 minutes. Communications delay would be 24+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 094 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 094 is Tuesday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1773 2023-04-03 06:09:36

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/11 Wednesday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/04/03 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 045.6 Sol Number: 095  Change in degrees is +.5 Julian date is: J0037095
Solar Longitude: 045.1 Sol Number: 094  Change in degrees is +.4 Julian date is: J0037094
Solar Longitude: 044.7 Sol Number: 093  Change in degrees is +.5 Julian date is: J0037093

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,801,374 km [22.2 km/s] Difference is +83931 <= 3497 km/hour at 08.0 on 04/03 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,717,443 km [22.2 km/s] Difference is +85348 <= 3556 km/hour at 08.0 on 04/02 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,632,095 km [22.2 km/s] Difference is +86700 <= 3613 km/hour at 08.0 on 04/01 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: at far left: HIP 30144 Mg 7.08 RA 06h 20m 36.4s far below path on Day 0
Star above path TYC 1881-1194-1 RA 06h 16m 31.5s Day 0 at far left – Day 1 at far right of screen past 12 hour marker – we are ** really ** moving!
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2023/04/03 221,193,132 (increasing)
Earth Distance 2023/04/02 220,386,666 (increasing)
Earth Distance 2023/04/01 218,315,888 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 12 and 13 minutes. Communications delay would be 24+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 095 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 095 is Wednesday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

Offline

#1774 2023-04-04 06:08:35

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/12 Thursday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/04/04 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 046.0 Sol Number: 096  Change in degrees is +.4 Julian date is: J0037096
Solar Longitude: 045.6 Sol Number: 095  Change in degrees is +.5 Julian date is: J0037095
Solar Longitude: 045.1 Sol Number: 094  Change in degrees is +.4 Julian date is: J0037094

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,883,956 km [22.2 km/s] Difference is +82582 <= 3441 km/hour at 08.0 on 04/04 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,801,374 km [22.2 km/s] Difference is +83931 <= 3497 km/hour at 08.0 on 04/03 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,717,443 km [22.2 km/s] Difference is +85348 <= 3556 km/hour at 08.0 on 04/02 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: Galaxy above path: PGC 1737577 RA 06h 21m 23.9s ahead of Mars on Day 0
HIP 30144 Mg 7.08 RA 06h 20m 36.4s far below path on Day 0 – Day 1 below and just past Mars – probably last day for 30144
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2023/04/04 222,856,222 (increasing)
Earth Distance 2023/04/03 221,193,132 (increasing)
Earth Distance 2023/04/02 220,386,666 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 12 and 13 minutes. Communications delay would be 24+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 096 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 096 is Thursday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

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#1775 2023-04-05 06:07:55

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 17,846

Re: Martian Calender - I have created a martian calender...

Today on Mars: 0037/04/13 Friday <<-- Days of the week offset 5 with Earth.  (count from Mars to Earth (updated 2023/03/24))

Today on Earth: 2023/04/05 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred June 20, 2022 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion

Martian Year: 37  Martian Astronomical Month in 12 month format: 2 <<== The Astronomical month will increment when longitude reaches 60 degrees

Solar Longitude: 046.4 Sol Number: 097  Change in degrees is +.4 Julian date is: J0037097
Solar Longitude: 046.0 Sol Number: 096  Change in degrees is +.4 Julian date is: J0037096
Solar Longitude: 045.6 Sol Number: 095  Change in degrees is +.5 Julian date is: J0037095

Note that Solar Longitude measurement varies as a function of location in orbit.  Ls 0 is the moment when the Sun appears to transit from one hemisphere to the other.  Update from Mars.NASA.gov (The Sun crosses the equator of Mars (Vernal Equinox)). The transition itself is a function of the tilt of an object with respect to the Solar plane. Per squarewidget.com, Hipparchus created the celestial coordinate system we use today.

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (estimated) 2024/05/08
Perihelion occurred at Ls 253 on Sol 485  Earth Date 2020/08/03  Earlier:  2018/09/16, 2016/10/29
Aphelion occurred at--- Ls 071 on Sol 152.  Aphelion Earth Dates: Earlier: 2017/10/07, 2015/11/20
Aphelion occurred near Ls 070 on Sol 153 (per www.planetary.org)

Note#3: The computations below are dependent upon both the computations provided by the reference web site and by accuracy of recording of the time of observations.  The calculations use tenths of hours.  The Sun Distance needs to be captured at the moment the time increments to a given tenth.

Note on data below: The figure quoted after distance is a rate of progress along the orbital path [exact meaning to be determined]
Minus prefix means Mars is approaching the Sun.  Plus prefix means Mars is moving away from the Sun.
The figure computed to the right of "Difference" is the rate of change of the distance to Sun. Increasing to Aphelion/Decreasing to Perihelion.

===
Distance: Mars >> Sun per theskylive.com:   246,965,157 km [22.2 km/s] Difference is +81201 <= 3383 km/hour at 08.0 on 04/05 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,883,956 km [22.2 km/s] Difference is +82582 <= 3441 km/hour at 08.0 on 04/04 (time 8:00) (24 hours)
Distance: Mars >> Sun per theskylive.com:   246,801,374 km [22.2 km/s] Difference is +83931 <= 3497 km/hour at 08.0 on 04/03 (time 8:00) (24 hours)
===

Observation: The sky view is ** filled ** with objects and very few have been recorded and given identification by humans or their robot assistants
And! ** All ** the location assignments are from the perspective of Earth.  The entire catalog needs to be adjusted when inter-stellar travel begins
The work that lies ahead for the astronomical community is daunting - there is work ahead for centuries
2022/01/19 - All current (existing) stellar catalogs are computed with reference to the Earth.  Another civilization would use it's planet as reference.
Perhaps a Milky Way frame of reference will become necessary at some point. The Earth is as good a Zero point as any, for humans.

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth.
Next up: Star just above path: TYC 1882-22-1 Mg 11.80 RA 06h 24m 52.0s Day 0 ahead of 12 hour marker
Galaxy above path: PGC 1737577 RA 06h 21m 23.9s ahead of Mars on Day 0  - Day 1 well past Mars – last day for 1737577
HIP 30144 Mg 7.08 RA 06h 20m 36.4s far below path on Day 0 – Day 1 below and just past Mars – probably last day for 30144 – Day 2 at edge of view
=== 

Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.

Note: The curve of the path of Mars as seen against the background of stars is now a line heading straight to the left at a slight upward angle.
As of 2023/01/11, the curve of the path has returned to regular movement to the left border

===
Earth Distance 2023/04/05 224,425,555 (increasing)
Earth Distance 2023/04/04 222,856,222 (increasing)
Earth Distance 2023/04/03 221,193,132 (increasing)
===

Mars and Earth are moving apart after Opposition.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.
Mars and Earth were in Opposition (Earth center)  in December of 2022.  The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Estimated light times: 1:18, 2:36, 3:54, 4:72, 5:90, 6:108, 7:126, 8:144,9:162, 10:180, 11:198,12:216, 13:234, 14:252, 15:270, 16:288, 17:306
Light travel time today is between 12 and 13 minutes. Communications delay would be 24+ minutes round trip.

In his online interview with Dr. Zubrin at the 2020 Mars Conference, Elon Musk reminded the audience that communications with Mars will necessarily include an intermediary station to handle traffic when the Sun is between Mars and Earth.  Communications delays in that circumstance will increase due to the extra distance to be covered.  Mr. Musk indicated he expects such communication will be handled by laser.  Location would be optimum at poles of solar plane.

Regular movement of Mars as seen from Earth resumed as of 2023/01/13. RA is once again increasing.
According to www.hercampus.com, Retrograde movement began October 30, 2022.
The online solar system display at the link below shows clearly how the Mars movement will occur in months ahead.

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1. Viewed 2022/10/13: Opposition will occur some time in December of 2022.  Per earthsky.org, the date is December 8, 2022.

This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/

=*=*=

Sol 097 is in Month 04 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month  04 extends from Sol 085 through 112. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 02
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 097 is Friday  in the Proposed Business calendar for Mars.  Sol 049 was a skip day on Earth. Year 37 Sol 86 is next expected skip day.

-*-*-

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 37
Per www.planetary.org Year 36 started 2021/02/07 on Earth. Mars Year 37 began 2022/12/27 on Earth.

The last Skip Day occurred  March 24, 2023 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected April 27, 2023 (range 26th >> 28th) on Earth.  The next re-alignment will occur near: June 23, 2023

For those who may not be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.
The next cycle began on the first Sol of the period of coincidence. The  alignment of weekdays interval is in the range: (310 - 337)
To find the first day of a period of coincidence: Set up: SearchTerm(colon) and (colon)Alignment and J0036*
Refinements of the search include: Author: tahanson43206 Topic: Martian Politics and Economy (Specify Posts instead of Topics)

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insight's weather info has been suspended and now is directing to msl*** <<-- Insight's mission is over (2022)

https://mars.nasa.gov/msl/weather/

Per SpaceNut: Here is another web page by NASA containing the latest news releases

https://mars.nasa.gov/news/?page=0&per_ … ope=Latest

All forum members are invited to post significant events for this day.
Events of interest will be ON Mars, or relate to Mars. Examples are launches, landings, discoveries

Standard Month in Mars Business Calendar
Su    Mo    Tu    We    Th    Fr    Sa
1       2      3      4      5      6      7
8       9    10     11    12    13    14
15    16    17     18    19    20    21
22    23    24     25    26    27    28

Recruiting text may be found at the bottom of this post:  http://newmars.com/forums/viewtopic.php … 57#p154257

Month 4 of 24 Quarter 1 of 4 [Month 1-6] (This month has 28 Sols)

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