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

tahanson43206 · 2024-09-13 08:54:59

===
Today on Mars: 0037/22/25 Wednesday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/13 Friday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

===
Solar Longitude: 328.1 Sol Number: 610 Change in degrees is +.5 Julian date is: J0037610
Solar Longitude: 327.6 Sol Number: 609 Change in degrees is +.6 Julian date is: J0037609
Solar Longitude: 327.0 Sol Number: 608 Change in degrees is +.5 Julian date is: J0037608
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 221,432,759 km [24.8 km/s] Difference is +190396 <= +7933 km/hour at 12 on 09/13 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,240,363 km [24.8 km/s] Difference is +190146 <= +7923 km/hour at 12 on 09/12 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,050,217 km [24.9 km/s] Difference is +189508 <= +7896 km/hour at 12 on 09/11 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star just above path at far left: TYC 1878-371-1 RA 06h 22m 35.0s – Day 0 -
TYC 1878-362-1 RA 06h 21m 14.9s – Day 0 – Day 1 Above Mars -
TYC 1878-419-1 RA 06h 18m 25.6s – Day 0 – Day 1 above 11th hour marker – Day 2 still visible at the extreme right edge – last minutes for 419
====*====*>>>

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

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

Light travel time today is between 13 and 14 minutes. Communications delay would be 26+ minutes round trip.

===
Earth Distance: 2024/09/13 202,603,000 (decreasing)
Earth Distance: 2024/09/12 203,348,000 (decreasing)
Earth Distance: 2024/09/11 204,415,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 610 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 22 extends from Sol 585 through 613. <<== There are 28 days in Month 22. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 610 is Wednesday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 · 2024-09-14 05:59:14

Place holder for today's Calendar update...

Greenwich, UK 09/14/2024, 13:00:00 Europe/London << UTC 12:00:00
Object: Mars (open sky map)
RA 06h 24m 58.4s Dec +23° 28' 33.9" Appar J2000
Mag: 0.65 (Estimated: JPL) Const: Gemini
Sun Dist: 221,621,662 km [24.8 km/s]
Earth Dist: 201,774,615 km [26.0 km/s]

Martian Year:
37
Martian Astronomical Month:
11
Solar longitude Ls:
328.7
Sol number:
611

(th)

tahanson43206 · 2024-09-14 10:31:10

===
Today on Mars: 0037/22/26 Thursday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/14 Saturday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

===
Solar Longitude: 328.7 Sol Number: 611 Change in degrees is +.6 Julian date is: J0037611
Solar Longitude: 328.1 Sol Number: 610 Change in degrees is +.5 Julian date is: J0037610
Solar Longitude: 327.6 Sol Number: 609 Change in degrees is +.6 Julian date is: J0037609
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 221,621,662 km [24.8 km/s] Difference is +190903 <= +7954 km/hour at 12 on 09/14 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,432,759 km [24.8 km/s] Difference is +190396 <= +7933 km/hour at 12 on 09/13 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,240,363 km [24.8 km/s] Difference is +190146 <= +7923 km/hour at 12 on 09/12 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star above path – TYC 1878-771-1 RA 06h 24m 51.9s – Day 0
TYC 1878-371-1 RA 06h 22m 35.0s – Day 0 – Day 1 past 11 hours marker -
TYC 1878-362-1 RA 06h 21m 14.9s – Day 0 – Day 1 Above Mars – Day 2 at right edge of view – last minutes for 362
====*====*>>>

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

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

Light travel time today is between 13 and 14 minutes. Communications delay would be 26+ minutes round trip.

===
Earth Distance: 2024/09/14 201,599,000 (decreasing)
Earth Distance: 2024/09/13 202,603,000 (decreasing)
Earth Distance: 2024/09/12 203,348,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 611 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 22 extends from Sol 585 through 613. <<== There are 28 days in Month 22. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 611 is Thursday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 · 2024-09-15 05:56:46

Place holder for today's Calendar update:

Greenwich, UK 09/15/2024, 13:00:01 Europe/London << 12:00:01 UTC
Object: Mars (open sky map)
RA 06h 27m 29.4s Dec +23° 28' 13.5" Appar J2000
Mag: 0.65 (Estimated: JPL) Const: Gemini
Sun Dist: 221,812,966 km [24.8 km/s]
Earth Dist: 200,828,602 km [25.8 km/s]

Martian Year:
37
Martian Astronomical Month:
11
Solar longitude Ls:
329.2
Sol number:
612

tahanson43206 · 2024-09-15 11:26:33

===
Today on Mars: 0037/22/27 Friday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/15 Sunday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

===
Solar Longitude: 329.2 Sol Number: 612 Change in degrees is +.5 Julian date is: J0037612
Solar Longitude: 328.7 Sol Number: 611 Change in degrees is +.6 Julian date is: J0037611
Solar Longitude: 328.1 Sol Number: 610 Change in degrees is +.5 Julian date is: J0037610
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 221,812,966 km [24.8 km/s] Difference is +191304 <= +7971 km/hour at 12 on 09/15 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,621,662 km [24.8 km/s] Difference is +190903 <= +7954 km/hour at 12 on 09/14 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,432,759 km [24.8 km/s] Difference is +190396 <= +7933 km/hour at 12 on 09/13 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Galaxy directly in path PGC 1688308 – RA 06h 28m 11.9s – Day 0
TYC 1878-771-1 RA 06h 24m 51.9s – Day 0 - Day 1 past 11 hours marker – last day for 771
====*====*>>>

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

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

Light travel time today is between 13 and 14 minutes. Communications delay would be 26+ minutes round trip.

===
Earth Distance: 2024/09/15 200,615,000 (decreasing)
Earth Distance: 2024/09/14 201,599,000 (decreasing)
Earth Distance: 2024/09/13 202,603,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 612 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 22 extends from Sol 585 through 613. <<== There are 28 days in Month 22. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 612 is Friday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 · 2024-09-16 06:01:21

Place holder for today's Calendar update

Greenwich, UK 09/16/2024, 13:00:08 Europe/London << 12:00:08 UTC
Object: Mars (open sky map)
RA 06h 29m 59.9s Dec +23° 27' 45.0" Appar J2000
Mag: 0.66 (Estimated: JPL) Const: Gemini
Sun Dist: 222,004,663 km [24.8 km/s]
Earth Dist: 199,877,926 km [25.6 km/s]

Martian Year:
37
Martian Astronomical Month:
11
Solar longitude Ls:
329.8
Sol number:
613

tahanson43206 · 2024-09-17 05:54:18

===
Today on Mars: 0037/22/28 Saturday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))
Last day of Month 22
Today on Earth: 2024/09/16 Monday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 11 <<== The Astronomical month will increment when longitude reaches 330 degrees

===
Solar Longitude: 329.8 Sol Number: 613 Change in degrees is +.8 Julian date is: J0037613
Solar Longitude: 329.2 Sol Number: 612 Change in degrees is +.5 Julian date is: J0037612
Solar Longitude: 328.7 Sol Number: 611 Change in degrees is +.6 Julian date is: J0037611
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 222,004,663 km [24.8 km/s] Difference is +191697 <= +7987 km/hour at 12 on 09/16 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,812,966 km [24.8 km/s] Difference is +191304 <= +7971 km/hour at 12 on 09/15 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,621,662 km [24.8 km/s] Difference is +190903 <= +7954 km/hour at 12 on 09/14 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
PGC 1688308 – RA 06h 28m 11.9s – Day 0 - Day 1 – missed update – Day 2 out of view
====*====*>>>

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

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

Light travel time today is between 13 and 14 minutes. Communications delay would be 26+ minutes round trip.

===
Earth Distance: 2024/09/16 199,500,000 (decreasing) (Estimated)
Earth Distance: 2024/09/15 200,615,000 (decreasing)
Earth Distance: 2024/09/14 201,599,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 613 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 22 extends from Sol 585 through 613. <<== There are 28 days in Month 22. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 613 is Saturday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 · 2024-09-17 05:55:08

Place holder for today's Calendar update...

Greenwich, UK 09/17/2024, 13:00:00 Europe/London << 12:00:00 UTC
Object: Mars (open sky map)
RA 06h 32m 29.4s Dec +23° 27' 09.2" Appar J2000
Mag: 0.65 (Estimated: JPL) Const: Gemini
Sun Dist: 222,196,688 km [24.7 km/s]
Earth Dist: 198,922,793 km [25.4 km/s]

Martian Year:
37
Martian Astronomical Month: (Just advanced to 12 from 11)
12
Solar longitude Ls: (Crossed 330 degrees)
330.3
Sol number:
614

tahanson43206 · 2024-09-17 09:02:01

===
Today on Mars: 0037/23/01 Sunday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))
First day of Month 23
Today on Earth: 2024/09/17 Tuesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 330.3 Sol Number: 614 Change in degrees is +.5 Julian date is: J0037614
Solar Longitude: 329.8 Sol Number: 613 Change in degrees is +.6 Julian date is: J0037613
Solar Longitude: 329.2 Sol Number: 612 Change in degrees is +.5 Julian date is: J0037612
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 222,196,688 km [24.7 km/s] Difference is +192025 <= +8001 km/hour at 12 on 09/17 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,004,663 km [24.8 km/s] Difference is +191697 <= +7987 km/hour at 12 on 09/16 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 221,812,966 km [24.8 km/s] Difference is +191304 <= +7971 km/hour at 12 on 09/15 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: five stars ahead of Mars TYC 1880-1579-1 RA 06h 33m 38.7s – Day 0 -
PGC 1688308 – RA 06h 28m 11.9s – Day 0 - Day 1 – missed update – Day 2 out of view
====*====*>>>

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

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

Light travel time today is between 13 and 14 minutes. Communications delay would be 26+ minutes round trip.

===
Earth Distance: 2024/09/17 198,808,000 (decreasing)
Earth Distance: 2024/09/16 199,500,000 (decreasing) (Estimated)
Earth Distance: 2024/09/15 200,615,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 614 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 614 is Sunday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

tahanson43206 · 2024-09-18 06:03:48

Place holder for today's Calendar update...

Greenwich, UK 09/18/2024, 13:00:05 Europe/London << 12:00:05 UTC
Object: Mars (open sky map)
RA 06h 34m 58.4s Dec +23° 26' 25.9" Appar J2000
Mag: 0.64 (Estimated: JPL) Const: Gemini
Sun Dist: 222,389,081 km [24.7 km/s]
Earth Dist: 197,962,889 km [25.3 km/s]

Martian Year: << The year will advance when longitude reaches 360 degrees
37
Martian Astronomical Month:
12
Solar longitude Ls:
330.9
Sol number:
615

tahanson43206 · 2024-09-18 20:35:56

===
Today on Mars: 0037/23/02 Monday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/18 Wednesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 330.9 Sol Number: 615 Change in degrees is +.6 Julian date is: J0037615
Solar Longitude: 330.3 Sol Number: 614 Change in degrees is +.5 Julian date is: J0037614
Solar Longitude: 329.8 Sol Number: 613 Change in degrees is +.6 Julian date is: J0037613
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 222,389,081 km [24.7 km/s] Difference is +192393 <= +8016 km/hour at 12 on 09/18 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,196,688 km [24.7 km/s] Difference is +192025 <= +8001 km/hour at 12 on 09/17 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,004,663 km [24.8 km/s] Difference is +191697 <= +7987 km/hour at 12 on 09/16 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Trio above path: TYC 1880-838-1 RA 06h 36m 28.8s – Day 0 -
TYC 1880-1579-1 RA 06h 33m 38.7s – Day 0 – Day 1 – Just past 11 hours marker
====*====*>>>

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

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

Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

===
Earth Distance: 2024/09/18 197,380,000 (decreasing)
Earth Distance: 2024/09/17 198,808,000 (decreasing)
Earth Distance: 2024/09/16 199,500,000 (decreasing) (Estimated)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 615 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 615 is Monday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

tahanson43206 · 2024-09-19 06:02:51

Place holder for today's Calendar update

Greenwich, UK 09/19/2024, 13:00:15 Europe/London << 12:00:15 UTC
Object: Mars (open sky map)
RA 06h 37m 26.4s Dec +23° 25' 34.3" Appar J2000
Mag: 0.64 (Estimated: JPL) Const: Gemini
Sun Dist: 222,581,810 km [24.7 km/s]
Earth Dist: 196,998,246 km [25.1 km/s]

Martian Year:
37
Martian Astronomical Month:
12
Solar longitude Ls:
331.4
Sol number:
616

tahanson43206 · 2024-09-19 09:46:38

===
Today on Mars: 0037/23/03 Tuesday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/19 Thursday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 331.4 Sol Number: 616 Change in degrees is +.5 Julian date is: J0037616
Solar Longitude: 330.9 Sol Number: 615 Change in degrees is +.6 Julian date is: J0037615
Solar Longitude: 330.3 Sol Number: 614 Change in degrees is +.5 Julian date is: J0037614
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 222,581,810 km [24.7 km/s] Difference is +192729 <= +8030 km/hour at 12 on 09/19 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,389,081 km [24.7 km/s] Difference is +192393 <= +8016 km/hour at 12 on 09/18 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,196,688 km [24.7 km/s] Difference is +192025 <= +8001 km/hour at 12 on 09/17 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Micro-boomer above path: HIP 31668 RA 06h 37m 40.0s – Day 0 -
TYC 1880-838-1 RA 06h 36m 28.8s – Day 0 – Day 1 – right at Mars! -
TYC 1880-1579-1 RA 06h 33m 38.7s – Day 0 – Day 1 – Just past 11 hours marker – Day 2 still visible at far right
====*====*>>>

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

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

Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

===
Earth Distance: 2024/09/19 196,850,000 (decreasing)
Earth Distance: 2024/09/18 197,380,000 (decreasing)
Earth Distance: 2024/09/17 198,808,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 616 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 616 is Tuesday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

tahanson43206 · 2024-09-20 05:57:32

Place holder for today's Calendar update...

Greenwich, UK 09/20/2024, 13:00:01 Europe/London << 12:00:01 UTC
Object: Mars (open sky map)
RA 06h 39m 53.3s Dec +23° 24' 36.2" Appar J2000
Mag: 0.60 (Estimated: JPL) Const: Gemini
Sun Dist: 222,774,792 km [24.7 km/s]
Earth Dist: 196,029,144 km [24.9 km/s]

Martian Year:
37
Martian Astronomic Month:
12
Solar longitude Ls:
332
Sol number:
617

tahanson43206 · 2024-09-20 08:17:57

===
Today on Mars: 0037/23/04 Wednesday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/20 Friday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 332.0 Sol Number: 617 Change in degrees is +.6 Julian date is: J0037617
Solar Longitude: 331.4 Sol Number: 616 Change in degrees is +.5 Julian date is: J0037616
Solar Longitude: 330.9 Sol Number: 615 Change in degrees is +.6 Julian date is: J0037615
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 222,774,792 km [24.7 km/s] Difference is +192982 <= +8041 km/hour at 12 on 09/20 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,581,810 km [24.7 km/s] Difference is +192729 <= +8030 km/hour at 12 on 09/19 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,389,081 km [24.7 km/s] Difference is +192393 <= +8016 km/hour at 12 on 09/18 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Galaxy above path: PGC 1689002 RA 06h 40m 5.1s – Day 0 -
HIP 31668 RA 06h 37m 40.0s – Day 0 – Day 1 above 11 hours marker
TYC 1880-838-1 RA 06h 36m 28.8s – Day 0 – Day 1 – right at Mars! - Day 2 still visible at far right – last moments for 838
====*====*>>>

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

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

Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

===
Earth Distance: 2024/09/20 195,947,000 (decreasing)
Earth Distance: 2024/09/19 196,850,000 (decreasing)
Earth Distance: 2024/09/18 197,380,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 617 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 617 is Wednesday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

tahanson43206 · 2024-09-21 06:02:42

Place holder for today's Calendar update

Greenwich, UK 09/21/2024, 13:00:00 Europe/London << 12:00:00 UTC
Object: Mars (open sky map)
RA 06h 42m 19.8s Dec +23° 23' 31.4" Appar J2000
Mag: 0.59 (Estimated: JPL) Const: Gemini
Sun Dist: 222,968,089 km [24.7 km/s]
Earth Dist: 195,055,160 km [24.7 km/s]

>>

Martian Year:
37
Martian Astronomic Month:
12
Solar longitude Ls:
332.5
Sol number:
618

tahanson43206 · 2024-09-21 08:46:06

===
Today on Mars: 0037/23/05 Thursday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/21 Saturday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 332.5 Sol Number: 618 Change in degrees is +.5 Julian date is: J0037618
Solar Longitude: 332.0 Sol Number: 617 Change in degrees is +.6 Julian date is: J0037617
Solar Longitude: 331.4 Sol Number: 616 Change in degrees is +.5 Julian date is: J0037616
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 222,968,089 km [24.7 km/s] Difference is +193297 <= +8054 km/hour at 12 on 09/21 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,774,792 km [24.7 km/s] Difference is +192982 <= +8041 km/hour at 12 on 09/20 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,581,810 km [24.7 km/s] Difference is +192729 <= +8030 km/hour at 12 on 09/19 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star in path: TYC 1893-797-1 RA 06h 43m 13.6s – Day 0 -
PGC 1689002 RA 06h 40m 5.1s – Day 0 -Day 1 above 11 hours marker
====*====*>>>

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

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

Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

===
Earth Distance: 2024/09/21 194,948,000 (decreasing)
Earth Distance: 2024/09/20 195,947,000 (decreasing)
Earth Distance: 2024/09/19 196,850,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 618 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 618 is Thursday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

tahanson43206 · 2024-09-22 05:57:38

Place holder for today's Calendar Update...

We are in the last astronomical month of the Mars astronomical year #37

Rate of movement along the ellipse is noticeably slowing.

Greenwich, UK 09/22/2024, 13:00:01 Europe/London <<< 12:00:01 UTC
Object: Mars (open sky map)
RA 06h 44m 45.3s Dec +23° 22' 19.7" Appar J2000
Mag: 0.58 (Estimated: JPL) Const: Gemini
Sun Dist: 223,161,661 km [24.6 km/s]
Earth Dist: 194,076,385 km [24.5 km/s]

Martian Astronomical Year:
37
Martian Astronomical Month:
12
Solar longitude Ls:
333.1
Sol number:
619

We are heading toward 687 Sols.

On the last Sol, we will re-align the business calendar with the astronomical calendar, so both start out at zero together.

(th)

tahanson43206 · 2024-09-22 12:14:37

===
Today on Mars: 0037/23/06 Friday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/22 Sunday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 333.1 Sol Number: 619 Change in degrees is +.6 Julian date is: J0037619
Solar Longitude: 332.5 Sol Number: 618 Change in degrees is +.5 Julian date is: J0037618
Solar Longitude: 332.0 Sol Number: 617 Change in degrees is +.6 Julian date is: J0037617
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 223,161,661 km [24.6 km/s] Difference is +193572 <= +8065 km/hour at 12 on 09/22 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,968,089 km [24.7 km/s] Difference is +193297 <= +8054 km/hour at 12 on 09/21 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,774,792 km [24.7 km/s] Difference is +192982 <= +8041 km/hour at 12 on 09/20 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Micro-Boomer in path HIP 32431 RA 06h 46m 10.4s – Day 0 -
TYC 1893-797-1 RA 06h 43m 13.6s – Day 0 - Day 1 past 5.5 hours marker
====*====*>>>

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

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

Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

===
Earth Distance: 2024/09/22 193,823,000 (decreasing)
Earth Distance: 2024/09/21 194,948,000 (decreasing)
Earth Distance: 2024/09/20 195,947,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 619 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 619 is Friday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

tahanson43206 · 2024-09-23 06:03:14

Place holder for today's Calendar update

Greenwich, UK 09/23/2024, 13:00:00 Europe/London << 12:00:00 UTC
Object: Mars (open sky map)
RA 06h 47m 09.7s Dec +23° 21' 00.9" Appar J2000
Mag: 0.58 (Estimated: JPL) Const: Gemini
Sun Dist: 223,355,481 km [24.6 km/s]
Earth Dist: 193,092,863 km [24.4 km/s]

Martian Year:
37
Martian Astronomical Month:
12
Solar longitude Ls:
333.6
Sol number:
620

(th)

tahanson43206 · 2024-09-23 12:06:36

===
Today on Mars: 0037/23/07 Saturday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/23 Monday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 333.6 Sol Number: 620 Change in degrees is +.5 Julian date is: J0037620
Solar Longitude: 333.1 Sol Number: 619 Change in degrees is +.6 Julian date is: J0037619
Solar Longitude: 332.5 Sol Number: 618 Change in degrees is +.5 Julian date is: J0037618
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 223,355,481 km [24.6 km/s] Difference is +193820 <= +8076 km/hour at 12 on 09/23 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 223,161,661 km [24.6 km/s] Difference is +193572 <= +8065 km/hour at 12 on 09/22 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 222,968,089 km [24.7 km/s] Difference is +193297 <= +8054 km/hour at 12 on 09/21 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Galaxy above path: PGC 1688086 RA 06h 06h 48m – Day 0 -
HIP 32431 RA 06h 46m 10.4s – Day 0 – Day 1 – just past Mars – Might be good for another day
====*====*>>>

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

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

Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

===
Earth Distance: 2024/09/23 192,844,000 (decreasing)
Earth Distance: 2024/09/22 193,823,000 (decreasing)
Earth Distance: 2024/09/21 194,948,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 620 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 620 is Saturday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

tahanson43206 · 2024-09-24 06:04:45

Place holder for today's Calendar update

Greenwich, UK 09/24/2024, 13:00:03 Europe/London << 12:00:03 UTC
Object: Mars (open sky map)
RA 06h 49m 33.2s Dec +23° 19' 35.8" Appar J2000
Mag: 0.57 (Estimated: JPL) Const: Gemini
Sun Dist: 223,549,541 km [24.6 km/s]
Earth Dist: 192,104,559 km [24.2 km/s]

Martian Year:
37
Martian Astronomical Month:
12
Solar longitude Ls:
334.2
Sol number:
621

tahanson43206 · 2024-09-24 08:49:06

===
Today on Mars: 0037/23/08 Sunday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/24 Tuesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 334.2 Sol Number: 621 Change in degrees is +.6 Julian date is: J0037621
Solar Longitude: 333.6 Sol Number: 620 Change in degrees is +.5 Julian date is: J0037620
Solar Longitude: 333.1 Sol Number: 619 Change in degrees is +.6 Julian date is: J0037619
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 223,549,541 km [24.6 km/s] Difference is +194060 <= +8086 km/hour at 12 on 09/24 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 223,355,481 km [24.6 km/s] Difference is +193820 <= +8076 km/hour at 12 on 09/23 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 223,161,661 km [24.6 km/s] Difference is +193572 <= +8065 km/hour at 12 on 09/22 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Galaxy just above path PGC 1686347 RA 06h 50m 7.5s – Day 0 -
PGC 1688086 RA 06h 06h 48m – Day 0 – Day 1 Still ahead of Mars -
HIP 32431 RA 06h 46m 10.4s – Day 0 – Day 1 – just past Mars – Might be good for another day – Day 2 still visible
====*====*>>>

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

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

Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

===
Earth Distance: 2024/09/24 191,990,000 (decreasing)
Earth Distance: 2024/09/23 192,844,000 (decreasing)
Earth Distance: 2024/09/22 193,823,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 621 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 621 is Sunday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

tahanson43206 · 2024-09-25 05:52:23

Place holder for today's Calendar update

Greenwich, UK 09/25/2024, 13:00:00 Europe/London << 12:00:00 utc
Object: Mars (open sky map)
RA 06h 51m 55.6s Dec +23° 18' 04.9" Appar J2000
Mag: 0.55 (Estimated: JPL) Const: Gemini
Sun Dist: 223,743,806 km [24.6 km/s]
Earth Dist: 191,111,587 km [24.0 km/s]

Martian Year:
37
Martian Astronomical Month:
12
Solar longitude Ls:
334.7
Sol number:
622

tahanson43206 · 2024-09-25 06:49:31

===
Today on Mars: 0037/23/09 Monday Days of the week offset 2 with Earth. (count from Mars to Earth (updated 2024/08/28))

Today on Earth: 2024/09/25 Wednesday Earth Date) Post Title: Today on Mars [Aphelion occurred May 30, 2023 Earth Calendar]
====*=

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

Martian Year: 37 Martian Astronomical Month in 12 month format: 12 <<== The Astronomical year will increment when longitude reaches 360 degrees

===
Solar Longitude: 334.7 Sol Number: 622 Change in degrees is +.5 Julian date is: J0037622
Solar Longitude: 334.2 Sol Number: 621 Change in degrees is +.6 Julian date is: J0037621
Solar Longitude: 333.6 Sol Number: 620 Change in degrees is +.5 Julian date is: J0037620
<<#

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

Note#2: https://theskylive.com/mars-tracker This web site shows the astronomical position of Mars as seen from Earth
Todo: At next Aphelion/Perihelion record the Mars data J00##### (and set Search term)
Perihelion occurred at Ls 251 on Sol 485 – Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
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: 223,743,806 km [24.6 km/s] Difference is +194265 <= +8094 km/hour at 12 on 09/25 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 223,549,541 km [24.6 km/s] Difference is +194060 <= +8086 km/hour at 12 on 09/24 (time 12:00) (24 hours)
Distance: Mars >> Sun per theskylive.com: 223,355,481 km [24.6 km/s] Difference is +193820 <= +8076 km/hour at 12 on 09/23 (time 12:00) (24 hours)
==*==*==*

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

=== Mars is in Regular Movement as seen from Earth. Mars is progressing from right to left in the view from Earth. Slant .005 degrees.
Next up: Star above path TYC 1894-1047-1 RA 06 52m 50.5s – Day 0 -
PGC 1686347 RA 06h 50m 7.5s – Day 0 – Day 1 above 6 hours past marker
PGC 1688086 RA 06h 06h 48m – Day 0 – Day 1 Still ahead of Mars – Day 2 still visible but just barely
====*====*>>>

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

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

Light travel time today is between 10 and 11 minutes. Communications delay would be 20+ minutes round trip.

===
Earth Distance: 2024/09/25 191,078,000 (decreasing)
Earth Distance: 2024/09/24 191,990,000 (decreasing)
Earth Distance: 2024/09/23 192,844,000 (decreasing)
#>

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, 8:144,9:162,10:180,11:198,12:216,13:234,14:252,15:270,16:288,17:306,18:324,19:342,20:360,21:378,22:396

Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun)
Mars and Earth were in Opposition (Earth center) in December of 2022. The date coincided with a (very rare) occultation of Mars by the Moon.
Mars and Earth were in Conjunction (Sun center) in November of 2023.
Mars and Earth appear to have been as close as they will get in this cycle. 81,454,323 kilometers on J0036644 Time: 4.53 minutes - 9 minutes round trip

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

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

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

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

===
Sol 625 is in Month 23 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 23 extends from Sol 614 through 641. <<== There are 28 days in Month 23. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 622 is Monday in the Proposed Business calendar for Mars. Sol 594 was a Skip Day on Mars. Next is near 630 October 3rd
##

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

Days of the Week Alignment:
Days of the week fall behind Earth due to the longer Sol, but they also change 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* or J0037*
The most recent End-Of-Quarter change occurred: … The search specified above gave 11 pages of results.

For current weather on Mars see:

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

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

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

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

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

Standard Month in Mars Business Calendar Copyright ® 2023 NewMars.com Mars Society
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 23 of 24: <<== Fifth month of Quarter 4

New Mars Forums

Announcement

#2376 2024-09-13 08:54:59

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

#2377 2024-09-14 05:59:14

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

#2378 2024-09-14 10:31:10

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

#2379 2024-09-15 05:56:46

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

#2380 2024-09-15 11:26:33

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

#2381 2024-09-16 06:01:21

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

#2382 2024-09-17 05:54:18

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

#2383 2024-09-17 05:55:08

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

#2384 2024-09-17 09:02:01

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

#2385 2024-09-18 06:03:48

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

#2386 2024-09-18 20:35:56

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

#2387 2024-09-19 06:02:51

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

#2388 2024-09-19 09:46:38

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

#2389 2024-09-20 05:57:32

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

#2390 2024-09-20 08:17:57

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

#2391 2024-09-21 06:02:42

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

#2392 2024-09-21 08:46:06

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

#2393 2024-09-22 05:57:38

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

#2394 2024-09-22 12:14:37

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

#2395 2024-09-23 06:03:14

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

#2396 2024-09-23 12:06:36

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

#2397 2024-09-24 06:04:45

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

#2398 2024-09-24 08:49:06

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

#2399 2024-09-25 05:52:23

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

#2400 2024-09-25 06:49:31

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

Board footer