New Mars Forums

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

One day note: Today is the First Sol of Month 22 in the proposed calendar for Mars. Mars New Years will occur in Earth December of 2022

Today on Mars: 0036/22/01 Sunday <<-- Days of the week offset 0 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/02 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 314.0 Sol Number: 586  Change in degrees is +.6 Julian date is: J0036586
Solar Longitude: 313.4 Sol Number: 585  Change in degrees is +.6 Julian date is: J0036585
Solar Longitude: 312.8 Sol Number: 584  Change in degrees is +.5 Julian date is: J0036584
---

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.  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:   216,826,726 km [25.3 km/s] Difference is +174381 <= 7266 km/hour at 8.0 on 10/02 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   216,652,345 km [25.4 km/s] Difference is +173462 <= 7228 km/hour at 8.0 on 10/01 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   216,478,883 km [25.4 km/s] Difference is +172526 <= 7189 km/hour at 8.0 on 09/30 (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.

---
Next up: Star above path: TYC 1847-1463-1 Mg 11.00 RA 05h 19m 09.7s Day 0 before 20 hour marker
TYC pair: 1847-37-1 below path Mg 10.79 TYC 1846-670-1 above path Mg 11.32 RA 05h 18m 07.7s - Day 1 still ahead of Mars
- TYC 1295-1869-1 Mg 12.20 RA 05h 16m 23.1s Day 0 at 19 hour marker - Day 1 right at Mars - just above and to the right - Day 2 still visible at far right
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/09/01, it is inclining upward at about 10 degrees

---
Earth Distance 2022/10/02 115,978,381  (decrease)
Earth Distance 2022/10/01 116,837,267  (decrease)
Earth Distance 2022/09/30 117,664.212  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/08/14 Retrograde movement is still in progress on sol 538

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 586 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 557
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 586 is Sunday  in the Proposed Business calendar for Mars.  Sol 557 was a skip day on Earth. 593 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The last Skip Day occurred  September 3,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected October 10, 2022 (range 9th >> 11th) on Earth. The next skip day will separate the week days.

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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/02 Monday <<-- Days of the week offset 0 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/03 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 314.6 Sol Number: 587  Change in degrees is +.6 Julian date is: J0036587
Solar Longitude: 314.0 Sol Number: 586  Change in degrees is +.6 Julian date is: J0036586
Solar Longitude: 313.4 Sol Number: 585  Change in degrees is +.6 Julian date is: J0036585
---

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.  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:   217,002,289 km [25.3 km/s] Difference is +175563 <= 7315 km/hour at 8.0 on 10/03 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   216,826,726 km [25.3 km/s] Difference is +174381 <= 7266 km/hour at 8.0 on 10/02 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   216,652,345 km [25.4 km/s] Difference is +173462 <= 7228 km/hour at 8.0 on 10/01 (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.

---
Next up: Not much - there are lots of stars but few labels - Way above path: TYC 1847-1102-1 Mg 11.60 RA 05h 20m 11.7s 20 hours ahead
: TYC 1847-1463-1 Mg 11.00 RA 05h 19m 09.7s Day 0 before 20 hour marker - Day 1 above Mars - may be good for one more day
TYC pair: 1847-37-1 below path Mg 10.79 TYC 1846-670-1 above path Mg 11.32 RA 05h 18m 07.7s - Day 1 still ahead of Mars - Day 2 at 20 hour marker
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/09/01, it is inclining upward at about 10 degrees

---
Earth Distance 2022/10/03 115,088,308  (decrease)
Earth Distance 2022/10/02 115,978,381  (decrease)
Earth Distance 2022/10/01 116,837,267  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/08/14 Retrograde movement is still in progress on sol 538

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 587 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 557
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 587 is Monday  in the Proposed Business calendar for Mars.  Sol 557 was a skip day on Earth. 593 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The last Skip Day occurred  September 3,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected October 10, 2022 (range 9th >> 11th) on Earth. The next skip day will separate the week days.

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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/03 Tuesday <<-- Days of the week offset 0 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/04 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 315.1 Sol Number: 588  Change in degrees is +.5 Julian date is: J0036588
Solar Longitude: 314.6 Sol Number: 587  Change in degrees is +.6 Julian date is: J0036587
Solar Longitude: 314.0 Sol Number: 586  Change in degrees is +.6 Julian date is: J0036586
---

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.  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:   217,178,110 km [25.3 km/s] Difference is +175821 <= 7326 km/hour at 8.0 on 10/04 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,002,289 km [25.3 km/s] Difference is +175563 <= 7315 km/hour at 8.0 on 10/03 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   216,826,726 km [25.3 km/s] Difference is +174381 <= 7266 km/hour at 8.0 on 10/02 (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.

---
Next up: Star just above path: TYC 1847-1277-1 Mg 11.32 RA 05h 22m 35.5s Day 0 - way ahead of 21 hour marker - good for two days
: TYC 1847-1102-1 Mg 11.60 RA 05h 20m 11.7s 20 hours ahead - Day 1 above Mars and just past
: TYC 1847-1463-1 Mg 11.00 RA 05h 19m 09.7s Day 0 before 20 hour marker - Day 1 above Mars - Day 2 at far right of view
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/09/01, it is inclining upward at about 10 degrees

---
Earth Distance 2022/10/04 114,263,888  (decrease)
Earth Distance 2022/10/03 115,088,308  (decrease)
Earth Distance 2022/10/02 115,978,381  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/08/14 Retrograde movement is still in progress on sol 538

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 588 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 557
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 588 is Tuesday  in the Proposed Business calendar for Mars.  Sol 557 was a skip day on Earth. 593 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The last Skip Day occurred  September 3,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected October 10, 2022 (range 9th >> 11th) on Earth. The next skip day will separate the week days.

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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/04 Wednesday <<-- Days of the week offset 0 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/05 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 315.7 Sol Number: 589  Change in degrees is +.6 Julian date is: J0036589
Solar Longitude: 315.1 Sol Number: 588  Change in degrees is +.5 Julian date is: J0036588
Solar Longitude: 314.6 Sol Number: 587  Change in degrees is +.6 Julian date is: J0036587
---

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.  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:   217,355,071 km [25.3 km/s] Difference is +176961 <= 7373 km/hour at 8.0 on 10/05 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,178,110 km [25.3 km/s] Difference is +175821 <= 7326 km/hour at 8.0 on 10/04 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,002,289 km [25.3 km/s] Difference is +175563 <= 7315 km/hour at 8.0 on 10/03 (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.

---
Next up: pair across path: TYC 1847-1471-1 Mg 12.06 RA 05h 24m 26.7s TYC 1847-524-1 above - Day 0 Way out to the far left of view
TYC 1847-1277-1 Mg 11.32 RA 05h 22m 35.5s Day 0 - way ahead of 21 hour marker- Day 1 10 hours ahead
: TYC 1847-1102-1 Mg 11.60 RA 05h 20m 11.7s 20 hours ahead - Day 1 above Mars and just past  - Day 2 still visible at extreme right of view
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/09/01, it is inclining upward at about 10 degrees

---
Earth Distance 2022/10/05 113,356,298  (decrease)
Earth Distance 2022/10/04 114,263,888  (decrease)
Earth Distance 2022/10/03 115,088,308  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/08/14 Retrograde movement is still in progress on sol 538

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 589 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 557
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 589 is Wednesday  in the Proposed Business calendar for Mars.  Sol 557 was a skip day on Earth. 593 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The last Skip Day occurred  September 3,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected October 10, 2022 (range 9th >> 11th) on Earth. The next skip day will separate the week days.

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***

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 22 of 24: <<== Fourth month of Quarter 4

SpaceNut

Administrator

From: New Hampshire

Registered: 2004-07-22

Posts: 29,433

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

Wow a large amount of information in that post but what caught my attention is that Mars_B4_moon quoted a post in a topic today from this topic.

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

For SpaceNut re #1580

Thanks for noting the daily Mars Calendar reports!  We are approaching completion of the second complete Mars Year.  Mars New Years is "scheduled" for December on Earth.  I would very much like to (somehow) put a printed (or online) copy of the Proposed Mars Business Calendar into circulation in time for the begin of Mars Year 37.

A condensed version of the entire calendar could be fit onto an 8 1/2 inch by 11 inch sheet of paper in portrait mode, if the 24 months are arranged in 8 rows of 3 columns.  Ideally the calendar print would show both Earth dates and Mars dates, just as we have been doing with the daily reports in NewMars.

(th)

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

For SpaceNut re #1580

Please post a link to the message in which Mars_B4_Moon quotes from one of the Calendar posts!

A calendar is pretty low on most folk's priority lists, even in the best of times, so it's nice to know that Mars_B4_Moon took a look at the ongoing Mars Business Calendar campaign.

This ongoing campaign is motivated in part by (a) the suggestions of RobertDyck in the beginning, that made it work and (b) the advantages of this design compared to the hodepodge mess of the Earth calendar.  Every day I take a moment to savor the pure simplicity and regularity of this design.

(th)

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/05 Thursday <<-- Days of the week offset 0 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/06 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 316.3 Sol Number: 590  Change in degrees is +.6 Julian date is: J0036590
Solar Longitude: 315.7 Sol Number: 589  Change in degrees is +.6 Julian date is: J0036589
Solar Longitude: 315.1 Sol Number: 588  Change in degrees is +.5 Julian date is: J0036588
---

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.  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:   217,532,880 km [25.3 km/s] Difference is +177809 <= 7409 km/hour at 8.0 on 10/06 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,355,071 km [25.3 km/s] Difference is +176961 <= 7373 km/hour at 8.0 on 10/05 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,178,110 km [25.3 km/s] Difference is +175821 <= 7326 km/hour at 8.0 on 10/04 (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.

---
Next up: Another bracket pair: above path TYC 1847-1346-1 RA 05h 25m 12.4s Below path TYC 1847-1345-1 Mg 10.26 Day 0 way ahead
: TYC 1847-1471-1 Mg 12.06 RA 05h 24m 26.7s TYC 1847-524-1 above - Day 0 Way out to the far left of view - Day 1 22 hours ahead
TYC 1847-1277-1 Mg 11.32 RA 05h 22m 35.5s Day 0 - way ahead of 21 hour marker- Day 1 10 hours ahead - Day 2 at 11 hours past marker
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/09/01, it is inclining upward at about 10 degrees

---
Earth Distance 2022/10/06 112,545,201  (decrease)
Earth Distance 2022/10/05 113,356,298  (decrease)
Earth Distance 2022/10/04 114,263,888  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/08/14 Retrograde movement is still in progress on sol 538

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 590 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 557
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 590 is Thursday  in the Proposed Business calendar for Mars.  Sol 557 was a skip day on Earth. 593 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The last Skip Day occurred  September 3,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected October 10, 2022 (range 9th >> 11th) on Earth. The next skip day will separate the week days.

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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/06 Friday <<-- Days of the week offset 0 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/07 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 316.9 Sol Number: 591  Change in degrees is +.6 Julian date is: J0036591
Solar Longitude: 316.3 Sol Number: 590  Change in degrees is +.6 Julian date is: J0036590
Solar Longitude: 315.7 Sol Number: 589  Change in degrees is +.6 Julian date is: J0036589
---

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.  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:   217,711,577 km [25.2 km/s] Difference is +178697 <= 7446 km/hour at 8.0 on 10/07 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,532,880 km [25.3 km/s] Difference is +177809 <= 7409 km/hour at 8.0 on 10/06 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,355,071 km [25.3 km/s] Difference is +176961 <= 7373 km/hour at 8.0 on 10/05 (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.

---
Next up: Two mini-Boomers: HIP 25413 RA 05h 26m 06.7s Mg 10.07 Day 0 before 23 hours marker
TYC 1847-1346-1 RA 05h 25m 12.4s Below path TYC 1847-1345-1 Mg 10.26 Day 0 way ahead - Day 1 11.5 ahead
: TYC 1847-1471-1 Mg 12.06 RA 05h 24m 26.7s TYC 1847-524-1 above - Day 0 Way out to the far left of view - Day 1 22 hours ahead Day 2 right at Mars
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/09/01, it is inclining upward at about 10 degrees

---
Earth Distance 2022/10/07 111,684,680  (decrease)
Earth Distance 2022/10/06 112,545,201  (decrease)
Earth Distance 2022/10/05 113,356,298  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/08/14 Retrograde movement is still in progress on sol 538

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 591 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 557
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 591 is Friday  in the Proposed Business calendar for Mars.  Sol 557 was a skip day on Earth. 593 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The last Skip Day occurred  September 3,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected October 10, 2022 (range 9th >> 11th) on Earth. The next skip day will separate the week days.

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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/07 Saturday <<-- Days of the week offset 0 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/08 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 317.4 Sol Number: 592  Change in degrees is +.5 Julian date is: J0036592
Solar Longitude: 316.9 Sol Number: 591  Change in degrees is +.6 Julian date is: J0036591
Solar Longitude: 316.3 Sol Number: 590  Change in degrees is +.6 Julian date is: J0036590
---

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.  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:   217,890,975 km [25.2 km/s] Difference is +179398 <= 7475 km/hour at 8.0 on 10/08 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,711,577 km [25.2 km/s] Difference is +178697 <= 7446 km/hour at 8.0 on 10/07 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,532,880 km [25.3 km/s] Difference is +177809 <= 7409 km/hour at 8.0 on 10/06 (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.

---
Next up: Two mini-Boomers: HIP 25413 RA 05h 26m 06.7s Mg 10.07 Day 0 before 23 hours marker - Day 1 still ahead of Mars
TYC 1847-1346-1 RA 05h 25m 12.4s Below path TYC 1847-1345-1 Mg 10.26 Day 0 way ahead - Day 1 11.5 ahead - Day 2 about 8 hours past Mars
TYC 1847-1471-1 Mg 12.06 RA 05h 24m 26.7s TYC 1847-524-1 above - Day 0 far left- Day 1- 22 hours ahead Day 2 right at Mars Day 3 at 24 hour marker
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/08 110,859,140  (decrease)
Earth Distance 2022/10/07 111,684,680  (decrease)
Earth Distance 2022/10/06 112,545,201  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/08/14 Retrograde movement is still in progress on sol 538

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 592 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 557
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 592 is Saturday  in the Proposed Business calendar for Mars.  Sol 557 was a skip day on Earth. 593 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The last Skip Day occurred  September 3,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected October 10, 2022 (range 9th >> 11th) on Earth. The next skip day will separate the week days.

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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/08 Sunday <<-- Days of the week offset 0 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/09 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 318.0 Sol Number: 593  Change in degrees is +.6 Julian date is: J0036593
Solar Longitude: 317.4 Sol Number: 592  Change in degrees is +.5 Julian date is: J0036592
Solar Longitude: 316.9 Sol Number: 591  Change in degrees is +.6 Julian date is: J0036591
---

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.  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:   218,071,066 km [25.2 km/s] Difference is +180091 <= 7504 km/hour at 8.0 on 10/09 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,890,975 km [25.2 km/s] Difference is +179398 <= 7475 km/hour at 8.0 on 10/08 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,711,577 km [25.2 km/s] Difference is +178697 <= 7446 km/hour at 8.0 on 10/07 (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.

---
Next up: two more mini-Boomers: above HIP 25586 Mg 8.60 RA 05h 28m 06.1s below HIP 25621 Mg 7.09 Day 0 outside 25 hour marker
HIP 25413 RA 05h 26m 06.7s Mg 10.07 Day 0 before 23 hours marker - Day 1 still ahead of Mars Day 2 13 hours past
TYC 1847-1346-1 RA 05h 25m 12.4s Below path TYC 1847-1345-1 Mg 10.26 Day 0 way ahead - Day 1 11.5 ahead - Day 2  8 past Day 3 > 25 hours past
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/09 110,001,681  (decrease)
Earth Distance 2022/10/08 110,859,140  (decrease)
Earth Distance 2022/10/07 111,684,680  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/08/14 Retrograde movement is still in progress on sol 538

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 593 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 557
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 593 is Sunday  in the Proposed Business calendar for Mars.  Sol 557 was a skip day on Earth. 593 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The last Skip Day occurred  September 3,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected October 10, 2022 (range 9th >> 11th) on Earth. The next skip day will separate the week days.

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***

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 22 of 24: <<== Fourth month of Quarter 4

Mars_B4_Moon

Member

Registered: 2006-03-23

Posts: 9,776

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

This Omega watch can tell time in Mars and many other things. 5 things to know

https://www.livemint.com/news/world/thi … 46495.html

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

For Mars_B4_Moon .... re #1587

Thank you for this post!

I had NO !!! idea that anyone might have gone to the trouble of encoding Mars time into a watch.

While that would be impressive enough if this is a digital watch, it would be truly astonishing if the movement is mechanical.

If anyone has a few moments to study the link provided by Mars_B4_Moon, I'd appreciate the addition to this topic!

SearchTerm:Omega watch Mars time
SearchTerm:watch Omega offers Mars time

Update ... the article at the link provided by Mars_B4_Moon is lengthy, with plenty of detail...

Here is a snippet:

Here are a few unique features of the watch:
Marstimer will be the first watch to display the time on Earth and Mars together
It can find the true north on Earth and Mars without using a magnetic compass.
It can withstand extreme temperatures and pressure exerted during space travel and atmospheric entry into another planet.
Also, it can withstand extremes of the vacuum of space, vibrations, stresses of launch, radiation, and the harsh conditions of other worlds.
The watch face is a combination of analogue and digital model
A release by ESA and Omega reads, "The Marstimer watch, developed with the same spirit that sent the first humans to space, builds on that heritage and looks forward to a new era of space exploration."

(th)

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

One Day Note: Today is a Skip Day.  Mars is holding at Sol 593, while Earth advances as usual.

Today on Mars: 0036/22/08 Sunday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/10 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 318.6 Sol Number: 593  Change in degrees is +.6 Julian date is: J0036593 << Skip Day SearchTerm:SkipDayMars
Solar Longitude: 318.0 Sol Number: 593  Change in degrees is +.6 Julian date is: J0036593
Solar Longitude: 317.4 Sol Number: 592  Change in degrees is +.5 Julian date is: J0036592
---

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.  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:   218,252,003 km [25.2 km/s] Difference is +180937 <= 7539 km/hour at 8.0 on 10/10 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,071,066 km [25.2 km/s] Difference is +180091 <= 7504 km/hour at 8.0 on 10/09 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   217,890,975 km [25.2 km/s] Difference is +179398 <= 7475 km/hour at 8.0 on 10/08 (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.

---
Next up: Star below path: TYC 1848-1296-1 Mg 11.52 RA 05h 29m 30.2s Day 0 ahead of 26 hour marker
HIP 25586 Mg 8.60 RA 05h 28m 06.1s above and  below HIP 25621 Mg 7.09 Day 0 outside 25 hour marker - Day 1 just ahead of Mars
HIP 25413 RA 05h 26m 06.7s Mg 10.07 Day 0 before 23 hours marker - Day 1 still ahead of Mars Day 2 13 hours past - Day 3 still visible at far right of view
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/10 109,158,166  (decrease)
Earth Distance 2022/10/09 110,001,681  (decrease)
Earth Distance 2022/10/08 110,859,140  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 593 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 593 is Sunday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/09 Monday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/11 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 319.1 Sol Number: 594  Change in degrees is +.5 Julian date is: J0036594
Solar Longitude: 318.6 Sol Number: 593  Change in degrees is +.6 Julian date is: J0036593 << Skip Day SearchTerm:SkipDayMars
Solar Longitude: 318.0 Sol Number: 593  Change in degrees is +.6 Julian date is: J0036593
---

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.  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:   218,433,856 km [25.2 km/s] Difference is +181853 <= 7577 km/hour at 8.0 on 10/11 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,252,003 km [25.2 km/s] Difference is +180937 <= 7539 km/hour at 8.0 on 10/10 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,071,066 km [25.2 km/s] Difference is +180091 <= 7504 km/hour at 8.0 on 10/09 (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.

---
Next up: four stars below path: TYC 1848-1004-1 Mg 11.34 RA 05h 30m 48.1s Day 0 ahead of 27 hour marker
: TYC 1848-1296-1 Mg 11.52 RA 05h 29m 30.2s Day 0 ahead of 26 hour marker - Day 1 Still ahead of Mars
HIP 25586 Mg 8.60 RA 05h 28m 06.1s above and  below HIP 25621 Mg 7.09 Day 0 outside 25 hour marker - Day 1 just ahead of Mars - Day 1 15 hours past
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/11 108,337,233  (decrease)
Earth Distance 2022/10/10 109,158,166  (decrease)
Earth Distance 2022/10/09 110,001,681  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 6 and 7 minutes. Communications delay would be 12+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 594 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 594 is Monday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/10 Tuesday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/12 Wedneday (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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 319.7 Sol Number: 595  Change in degrees is +.6 Julian date is: J0036595
Solar Longitude: 319.1 Sol Number: 594  Change in degrees is +.5 Julian date is: J0036594
Solar Longitude: 318.6 Sol Number: 593  Change in degrees is +.6 Julian date is: J0036593 << Skip Day SearchTerm:SkipDayMars
---

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.  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:   218,616,061 km [25.1 km/s] Difference is +182205 <= 7592 km/hour at 8.0 on 10/12 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,433,856 km [25.2 km/s] Difference is +181853 <= 7577 km/hour at 8.0 on 10/11 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,252,003 km [25.2 km/s] Difference is +180937 <= 7539 km/hour at 8.0 on 10/10 (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.

---
Next up: Stars bracket TYC 1848-1239-1 Mg 10.36 RA 05h 32m 29.6s Day 0 ** way ** out in front - Reversal of retrograde motion is approaching
: TYC 1848-1004-1 Mg 11.34 RA 05h 30m 48.1s Day 0 ahead of 27 hour marker - Day 1 at 11 hours before marker
: TYC 1848-1296-1 Mg 11.52 RA 05h 29m 30.2s Day 0 ahead of 26 hour marker - Day 1 Still ahead of Mars - Day 2 just past 14 hour marker
HIP 25586 Mg 8.60 RA 05h 28m 06.1s  HIP 25621 Mg 7.09 Day 0 outside 25 hour marker - Day 1 just ahead of Mars - Day 1 15 hours past - Day 2 on edge
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/12 107,462,333  (decrease)
Earth Distance 2022/10/11 108,337,233  (decrease)
Earth Distance 2022/10/10 109,158,166  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

This web site offers an online model of the solar system: www.solarsystemscope.com  It requires Chrome 57, Firefox 52 or Safari 10.1

---

Sol 595 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 595 is Tuesday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/11 Wednesday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/13 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 320.3 Sol Number: 596  Change in degrees is +.6 Julian date is: J0036596
Solar Longitude: 319.7 Sol Number: 595  Change in degrees is +.6 Julian date is: J0036595
Solar Longitude: 319.1 Sol Number: 594  Change in degrees is +.5 Julian date is: J0036594
---

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.  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:   218,799,270 km [25.1 km/s] Difference is +183209 <= 7633 km/hour at 8.0 on 10/13 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,616,061 km [25.1 km/s] Difference is +182205 <= 7592 km/hour at 8.0 on 10/12 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,433,856 km [25.2 km/s] Difference is +181853 <= 7577 km/hour at 8.0 on 10/11 (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 approaching the end of the Retrograde Movement as seen from Earth
TYC 1848-1239-1 Mg 10.36 RA 05h 32m 29.6s Day 0 ** way ** out in front - Day 1 ahead of 29 hour marker - keeping 1239 as (Next Up)
: TYC 1848-1004-1 Mg 11.34 RA 05h 30m 48.1s Day 0 ahead of 27 hour marker - Day 1 at 11 hours before marker - Day 2 just past Mars
: TYC 1848-1296-1 Mg 11.52 RA 05h 29m 30.2s Day 0 ahead of 26 hour marker - Day 1 ahead Mars - Day 2 past 14 hour - Day 3 - past 29 hour marker
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/13 106,671,920  (decrease)
Earth Distance 2022/10/12 107,462,333  (decrease)
Earth Distance 2022/10/11 108,337,233  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 596 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 596 is Wednesday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/12 Thursday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/14 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 320.8 Sol Number: 597  Change in degrees is +.5 Julian date is: J0036597
Solar Longitude: 320.3 Sol Number: 596  Change in degrees is +.6 Julian date is: J0036596
Solar Longitude: 319.7 Sol Number: 595  Change in degrees is +.6 Julian date is: J0036595
---

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.  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:   218,982,854 km [25.1 km/s] Difference is +183584 <= 7649 km/hour at 8.0 on 10/14 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,799,270 km [25.1 km/s] Difference is +183209 <= 7633 km/hour at 8.0 on 10/13 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,616,061 km [25.1 km/s] Difference is +182205 <= 7592 km/hour at 8.0 on 10/12 (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 approaching the end of the Retrograde Movement as seen from Earth
Next up: HIP 26015 Mg 7.77 RA 05h 33m 05.4s in path Day 0 at 31 hours before marker
TYC 1848-1239-1 Mg 10.36 RA 05h 32m 29.6s Day 0 ** way ** out in front - Day 1 ahead of 29 hour marker - Day 2 at 15 hours before maker
: TYC 1848-1004-1 Mg 11.34 RA 05h 30m 48.1s Day 0 ahead of 27 hour marker - Day 1 at 11 hours before marker - Day 2 just past Mars Day 3 at 31 hour mark
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/14 105,819,222  (decrease)
Earth Distance 2022/10/13 106,671,920  (decrease)
Earth Distance 2022/10/12 107,462,333  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 597 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 597 is Thursday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/13 Friday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/15 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 321.4 Sol Number: 598  Change in degrees is +.6 Julian date is: J0036598
Solar Longitude: 320.8 Sol Number: 597  Change in degrees is +.5 Julian date is: J0036597
Solar Longitude: 320.3 Sol Number: 596  Change in degrees is +.6 Julian date is: J0036596
---

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.  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:   219,167,325 km [25.1 km/s] Difference is +184471 <= 7686 km/hour at 8.0 on 10/15 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,982,854 km [25.1 km/s] Difference is +183584 <= 7649 km/hour at 8.0 on 10/14 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,799,270 km [25.1 km/s] Difference is +183209 <= 7633 km/hour at 8.0 on 10/13 (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 approaching the end of the Retrograde Movement as seen from Earth
Next up: Galaxy PGC 1683039 RA 05h 33m 55.4s in path at 32 hour marker on Day 0
: HIP 26015 Mg 7.77 RA 05h 33m 05.4s in path Day 0 at 31 hours before marker - just at Mars
TYC 1848-1239-1 Mg 10.36 RA 05h 32m 29.6s Day 0 ** way ** out in front - Day 1 ahead of 29 hour marker - Day 2 at 15 hours before maker
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/15 104,921,700  (decrease)
Earth Distance 2022/10/14 105,819,222  (decrease)
Earth Distance 2022/10/13 106,671,920  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 598 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 598 is Friday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/14 Saturiday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/16 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 322.0 Sol Number: 599  Change in degrees is +.6 Julian date is: J0036599
Solar Longitude: 321.4 Sol Number: 598  Change in degrees is +.6 Julian date is: J0036598
Solar Longitude: 320.8 Sol Number: 597  Change in degrees is +.5 Julian date is: J0036597
---

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.  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:   219,352,313 km [25.1 km/s] Difference is +184988 <= 7707 km/hour at 8.0 on 10/16 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   219,167,325 km [25.1 km/s] Difference is +184471 <= 7686 km/hour at 8.0 on 10/15 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   218,982,854 km [25.1 km/s] Difference is +183584 <= 7649 km/hour at 8.0 on 10/14 (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 approaching the end of the Retrograde Movement as seen from Earth
Next up: TYC in path 1848-352-1 Mg 11.30 RA 05h 34m 40.3s before 17 hour marker
: Galaxy PGC 1683039 RA 05h 33m 55.4s in path at 32 hour marker on Day 0 - Day 1 at Mars
: HIP 26015 Mg 7.77 RA 05h 33m 05.4s in path Day 0 at 31 hours before marker - just at Mars - Day 1 past 17 hour marker
TYC 1848-1239-1 Mg 10.36 RA 05h 32m 29.6s Day 0 ** way ** out in front - Day 1 ahead of 29 hours  - Day 2 15 hours before - Day 3 at 35 after
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/16 104,032,333  (decrease)
Earth Distance 2022/10/15 104,921,700  (decrease)
Earth Distance 2022/10/14 105,819,222  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 599 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 599 is Saturday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/15 Sunday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/17 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 322.5 Sol Number: 600  Change in degrees is +.5 Julian date is: J0036600
Solar Longitude: 322.0 Sol Number: 599  Change in degrees is +.6 Julian date is: J0036599
Solar Longitude: 321.4 Sol Number: 598  Change in degrees is +.6 Julian date is: J0036598
---

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.  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:   219,538,010 km [25.0 km/s] Difference is +185697 <= 7737 km/hour at 8.0 on 10/17 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   219,352,313 km [25.1 km/s] Difference is +184988 <= 7707 km/hour at 8.0 on 10/16 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   219,167,325 km [25.1 km/s] Difference is +184471 <= 7686 km/hour at 8.0 on 10/15 (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 approaching the end of the Retrograde Movement as seen from Earth
Next up: in path TYC 1861-1248-1 Mg 12.01 RA 05h 36m 11.8s Day 0 ahead of 37 hour marker
: TYC in path 1848-352-1 Mg 11.30 RA 05h 34m 40.3s before 17 hour marker - Day 1 at just ahead of Mars
: Galaxy PGC 1683039 RA 05h 33m 55.4s in path at 32 hour marker on Day 0 - Day 1 at Mars - Day 2 at 18.5 hour marker
: HIP 26015 Mg 7.77 RA 05h 33m 05.4s in path Day 0 at 31 hours before marker - just at Mars - Day 1 past 17 hour marker Day 2 at 37 hour marker
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/17 103,424,935  (decrease)
Earth Distance 2022/10/16 104,032,333  (decrease)
Earth Distance 2022/10/15 104,921,700  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 600 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 600 is Sunday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/16 Monday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/18 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 323.1 Sol Number: 601  Change in degrees is +.6 Julian date is: J0036601
Solar Longitude: 322.5 Sol Number: 600  Change in degrees is +.5 Julian date is: J0036600
Solar Longitude: 322.0 Sol Number: 599  Change in degrees is +.6 Julian date is: J0036599
---

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.  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:   219,724,251 km [25.0 km/s] Difference is +186241 <= 7760 km/hour at 8.0 on 10/18 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   219,538,010 km [25.0 km/s] Difference is +185697 <= 7737 km/hour at 8.0 on 10/17 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   219,352,313 km [25.1 km/s] Difference is +184988 <= 7707 km/hour at 8.0 on 10/16 (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 approaching the end of the Retrograde Movement as seen from Earth
TYC 1861-1248-1 Mg 12.01 RA 05h 36m 11.8s Day 0 ahead of 37 hour marker - Day 1 right at 39 hour marker
TYC in path 1848-352-1 Mg 11.30 RA 05h 34m 40.3s before 17 hour marker - Day 1 at just ahead of Mars - Day 2 at 10.5 hour marker
Galaxy PGC 1683039 RA 05h 33m 55.4s 32 before Day 0 - Day 1 at Mars - Day 2 at 18.5 hour marker - Day 3 at 39 hour marker
HIP 26015 Mg 7.77 RA 05h 33m 05.4s Day 0 31 hours before Day 1  just at Mars - Day past 17  Day 2 at 37 Day 3 Still visible at right
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/18 102,631,310  (decrease)
Earth Distance 2022/10/17 103,424,935  (decrease)
Earth Distance 2022/10/16 104,032,333  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 601 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 601 is Monday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/18 Wednesday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/20 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 324.2 Sol Number: 603  Change in degrees is +.5 Julian date is: J0036603
Solar Longitude: 323.7 Sol Number: 602  Change in degrees is +.6 Julian date is: J0036602
Solar Longitude: 323.1 Sol Number: 601  Change in degrees is +.6 Julian date is: J0036601
---

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.  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:   220,098,577 km [25.0 km/s] Difference is +187446 <= 7810 km/hour at 8.0 on 10/20 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   219,911,131 km [25.0 km/s] Difference is +186880 <= 7787 km/hour at 8.0 on 10/19 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   219,724,251 km [25.0 km/s] Difference is +186241 <= 7760 km/hour at 8.0 on 10/18 (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 approaching the end of the Retrograde Movement as seen from Earth
: Bright TYC: 1861-951-1 Mg 8.75 RA 05h 36m 51.7s Day 0 above path at 42 hour marker - Day 1 23.5 before
TYC 1861-1248-1 Mg 12.01 RA 05h 36m 11.8s Day 0 ahead of 37 - Day 1 at 39 - Day 2 ahead of Mars - Day 3 Past Mars
TYC in path 1848-352-1 Mg 11.30 RA 05h 34m 40.3s before 17 - Day 1 at Mars - Day 2 at 10.5 - Day 3 at 42 - Day 4 past 47 hour marker
Galaxy PGC 1683039 RA 05h 33m 55.4s before Day 0 - Day 1 at Mars - Day 2 at 18.5 - Day 3 at 39 - Day 4 still visible at far right - Day 5 still visible!
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/20 101,035,777  (decrease)
Earth Distance 2022/10/19 101,744,777  (decrease)
Earth Distance 2022/10/18 102,631,310  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 603 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 603 is Wednesday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/19 Thursday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/21 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 324.8 Sol Number: 604  Change in degrees is +.6 Julian date is: J0036604
Solar Longitude: 324.2 Sol Number: 603  Change in degrees is +.5 Julian date is: J0036603
Solar Longitude: 323.7 Sol Number: 602  Change in degrees is +.6 Julian date is: J0036602
---

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.  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:   220,286,481 km [25.0 km/s] Difference is +187904 <= 7829 km/hour at 8.0 on 10/21 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   220,098,577 km [25.0 km/s] Difference is +187446 <= 7810 km/hour at 8.0 on 10/20 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   219,911,131 km [25.0 km/s] Difference is +186880 <= 7787 km/hour at 8.0 on 10/19 (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 approaching the end of the Retrograde Movement as seen from Earth
Next up: mini-Boomer HIP 26599 Mg 7.32 RA 05hg 39m 14.8s below path and at far left of view
: Bright TYC: 1861-951-1 Mg 8.75 RA 05h 36m 51.7s Day 0 above path at 42 hour marker - Day 1 23.5 before  - Day 2 at Mars
TYC 1861-1248-1 Mg 12.01 RA 05h 36m 11.8s Day 0 ahead of 37 - Day 1 at 39 - Day 2 ahead of Mars - Day 3 Past Mars - Day 4 Past 24.5
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/21 100,271,305  (decrease)
Earth Distance 2022/10/20 101,035,777  (decrease)
Earth Distance 2022/10/19 101,744,777  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 604 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 604 is Thursday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4

tahanson43206

Moderator

Registered: 2018-04-27

Posts: 19,443

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

Today on Mars: 0036/22/20 Friday <<-- Days of the week offset 1 with Earth.  (count from Mars to Earth (updated 2022/09/03))

--- 

Today on Earth: 2022/10/22 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 oppositon/perigee/aphelion

Martian Year: 36  Martian Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

Solar Longitude: 325.3 Sol Number: 605  Change in degrees is +.5 Julian date is: J0036605
Solar Longitude: 324.8 Sol Number: 604  Change in degrees is +.6 Julian date is: J0036604
Solar Longitude: 324.2 Sol Number: 603  Change in degrees is +.5 Julian date is: J0036603
---

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.  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:   220,474,899 km [24.9 km/s] Difference is +188418 <= 7851 km/hour at 8.0 on 10/22 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   220,286,481 km [25.0 km/s] Difference is +187904 <= 7829 km/hour at 8.0 on 10/21 (time 8:00)
Distance: Mars >> Sun per theskylive.com:   220,098,577 km [25.0 km/s] Difference is +187446 <= 7810 km/hour at 8.0 on 10/20 (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 approaching the end of the Retrograde Movement as seen from Earth
HIP 26599 Mg 7.32 RA 05hg 39m 14.8s below path and at far left of view - Day 1 still there are far left
: Bright TYC: 1861-951-1 Mg 8.75 RA 05h 36m 51.7s Day 0 above path at 42 hour marker - Day 1 23.5 before  - Day 2 at Mars - Day 3 28 marker
TYC 1861-1248-1 Mg 12.01 RA 05h 36m 11.8s Day 0 >37 - Day 1 at 39 - Day 2 > Mars - Day 3 < Mars - Day 4 < 24.5 - Day 5 at 57 marker
---

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.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.
Update 2022/01/22 What I'm asking for is a "Zoom Out" feature.  If anyone knows of such a service, please contact the NewMars portal.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending upward and East as seen from Earth
In recent days, the curve has been holding steady , and on 2022/10/08, it is inclining upward at about 3 degrees

---
Earth Distance 2022/10/22  99,437,845  (decrease)
Earth Distance 2022/10/21 100,271,305  (decrease)
Earth Distance 2022/10/20 101,035,777  (decrease)
---

Mars and Earth are coming closer after Conjunction.  The two planets were on opposite sides of the Sun at Earth Distance maximum October 2021.

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 5 and 6 minutes. Communications delay would be 10+ 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.

Mars is executing the "Retrograde" movement as seen from Earth. Earth is passing "under" Mars.
Progress of Mars (as seen from Earth) is transitioning back to Eastward as the retrograde movement continues.
The online solar system display at the link below shows clearly how the Mars retrograde movement will occur in months ahead.
Retrograde movement started 2020/09/08 Sol 520 - Update 2022/10/10 Retrograde movement is still in progress on sol 593 but is slowing notably

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.

---

Sol 605 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<== Skip Day Sol 593
Month  22 extends from Sol 586 through 613. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 21
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 605 is Friday  in the Proposed Business calendar for Mars.  Sol 593 was a skip day on Earth. 630 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 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year was 36.

The last Skip Day occurred  October 10,  2022 on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
The next Skip day is expected November 16, 2022 (range 15th >> 17th) on Earth.  The next re-alignment will occur 37*7-3 Days out: 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***

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 22 of 24: <<== Fourth month of Quarter 4