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Place holder for today's Calendar update
[51.4792N, 0.0000E] 12/19/2025, 13:00:01 Europe/London
Object: Mars (open sky map)
RA 18h 14m 01.2s Dec -24° 12' 19.3" Appar J2000
Mag: 1.22 (Estimated: JPL) Const: Sagittarius
Sun Dist: 215,751,671 km [25.5 km/s]
Earth Dist: 361,858,815 km [55.4 km/s]
Martian Year:
38
Martian Astronomical Month:
7
Solar longitude Ls:
191
Sol number:
391
Next ahead:
Galaxy PGC 205671 Below path Day 0 below 8 hours marker RA 18h 10m 32.4s
Three stars just above path TYC 6842-1683-1 RA 18h 7m 52.6s Day 0 ahead Day 1 past 8 hours marker
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===
Today on Mars: 0038/15/01 Sunday Days of the week OFFSET 5 with Earth. (count from Mars to Earth )
Sol 391 Business Month 14 Second month of Quarter 3 of Year 38
Today on Earth: 2025/12/19 Friday Earth Date) Post Title: Today on Mars
====*====*==
To see how this calendar works, we show the standard 28 day month at the bottom of this daily report.
There are 20 months of 28 Sols and 4 months of 27 Sols at the end of the four six-month quarters.
New Years Eve is extended to align the Business Calendar for Mars with the Astronomical calendar.
Business and Astronomical both start at zero (to the nanosecond) on New Year's Day.
This calendar has been in operation for two full Mars years (36 and 37). We are in Year 38
Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion
Martian Year: 38 Martian Astronomical Month in 12 month format: 7 <<== The Astronomical month will increment when longitude reaches 210 degrees
===
Solar Longitude: 191.0 Sol Number: 391 Change in degrees is +.5 Julian date is: J0038391
Solar Longitude: 190.5 Sol Number: 390 Change in degrees is +.6 Julian date is: J0038390
Solar Longitude: 189.9 Sol Number: 389 Change in degrees is +.6 Julian date is: J0038389
#>
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 date as J00##### (and set Search term)
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred in 2022 at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion Earth Dates: Next: 2027/03/04 Earlier: 2025/04/16, 2023/05/30, 2021/07/12, 2019/08/25, 2017/10/07, 2015/11/20
Aphelion occurred at--- Ls 071 on Sol 152.
Aphelion occurred near Ls 070 on Sol 153 (per http://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.
Aphelion of Mars is due March 04, 2027 Sol 151-152 Note velocity of Mars was 22.0 km/s nearing Aphelion (21.97 km/s)
===
Distance: Mars >> Sun per theskylive.com: 215,751,671 km [25.5 km/s] Difference is -169385 <= -7057 km/hour at 12.0 on 12/19 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,921,056 km [25.4 km/s] Difference is -170385 <= -7099 km/hour at 12.0 on 12/18 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 216,091,441 km [25.4 km/s] Difference is -170585 <= -7137 km/hour at 12.0 on 12/17 (time 12:00) (23.9 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.
Next ahead: Star TYC 6843-325-1 RA 18h 14m 15.1s Day 0 ahead of 8 hour marker
====*====*===
Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.
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
Light travel time today is between 20 and 21 minutes. Communications delay would be 40+ minutes round trip.
===
Earth Distance in km: 2025/12/19 361,858,815 (decreasing)
Earth Distance in km: 2025/12/18 361,933,494 (decreasing)
Earth Distance in km: 2025/12/17 362,004,389 (decreasing)
<<#
Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
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 Year 36. 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.
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 391 is in Month 15 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 15 extends from Sol 391 through 418. <<== There are 28 days in Month 15. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 391 is Sunday in the Proposed Business calendar for Mars. Sol 376 was a Skip Day on Mars. Next is near 413 of Year 38
##
The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. Year 38 started November 12, 2024 on Earth
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
Copyright the Mars Society All Rights Reserved
Month 15 of 24: Third month of the 3rd Quarter and Second Half
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 12/20/2025, 13:00:00 Europe/London
Object: Mars (open sky map)
RA 18h 17m 20.7s Dec -24° 11' 30.3" Appar J2000
Mag: 1.22 (Estimated: JPL) Const: Sagittarius
Sun Dist: 215,583,287 km [25.5 km/s]
Earth Dist: 361,780,384 km [55.4 km/s]
Martian Year:
38
Martian Astronomical Month:
7
Solar longitude Ls:
191.6
Sol number:
392
Next ahead: Star TYC 6843-325-1 RA 18h 14m 15.1s Day 0 ahead of 8 hour marker
Offline
Like button can go here
===
Today on Mars: 0038/15/02 Monday Days of the week OFFSET 5 with Earth. (count from Mars to Earth )
Sol 392 Business Month 14 Second month of Quarter 3 of Year 38
Today on Earth: 2025/12/20 Saturday Earth Date) Post Title: Today on Mars
====*====*==
To see how this calendar works, we show the standard 28 day month at the bottom of this daily report.
There are 20 months of 28 Sols and 4 months of 27 Sols at the end of the four six-month quarters.
New Years Eve is extended to align the Business Calendar for Mars with the Astronomical calendar.
Business and Astronomical both start at zero (to the nanosecond) on New Year's Day.
This calendar has been in operation for two full Mars years (36 and 37). We are in Year 38
Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion
Martian Year: 38 Martian Astronomical Month in 12 month format: 7 <<== The Astronomical month will increment when longitude reaches 210 degrees
===
Solar Longitude: 191.6 Sol Number: 392 Change in degrees is +.6 Julian date is: J0038392
Solar Longitude: 191.0 Sol Number: 391 Change in degrees is +.5 Julian date is: J0038391
Solar Longitude: 190.5 Sol Number: 390 Change in degrees is +.6 Julian date is: J0038390
#>
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 date as J00##### (and set Search term)
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred in 2022 at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion Earth Dates: Next: 2027/03/04 Earlier: 2025/04/16, 2023/05/30, 2021/07/12, 2019/08/25, 2017/10/07, 2015/11/20
Aphelion occurred at--- Ls 071 on Sol 152.
Aphelion occurred near Ls 070 on Sol 153 (per http://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.
Aphelion of Mars is due March 04, 2027 Sol 151-152 Note velocity of Mars was 22.0 km/s nearing Aphelion (21.97 km/s)
===
Distance: Mars >> Sun per theskylive.com: 215,583,287 km [25.5 km/s] Difference is -186384 <= -7016 km/hour at 12.0 on 12/20 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,751,671 km [25.5 km/s] Difference is -169385 <= -7057 km/hour at 12.0 on 12/19 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,921,056 km [25.4 km/s] Difference is -170385 <= -7099 km/hour at 12.0 on 12/18 (time 12:00) (24.0 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.
Next ahead: Star above path TYC 6844-3459-1 RA 18h 19m 01.5s Day 0 well ahead
Star TYC 6843-325-1 RA 18h 14m 15.1s Day 0 ahead of 8 hour marker Day 1 past 8 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.
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
Light travel time today is between 20 and 21 minutes. Communications delay would be 40+ minutes round trip.
===
Earth Distance in km: 2025/12/20 361,780,384 (decreasing)
Earth Distance in km: 2025/12/19 361,858,815 (decreasing)
Earth Distance in km: 2025/12/18 361,933,494 (decreasing)
<<#
Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
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 Year 36. 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.
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 392 is in Month 15 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 15 extends from Sol 391 through 418. <<== There are 28 days in Month 15. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 392 is Monday in the Proposed Business calendar for Mars. Sol 376 was a Skip Day on Mars. Next is near 413 of Year 38
##
The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. Year 38 started November 12, 2024 on Earth
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
Copyright the Mars Society All Rights Reserved
Month 15 of 24: Third month of the 3rd Quarter and Second Half
Offline
Like button can go here
Place holder for today's Calendar update...
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[51.4792N, 0.0000E] 12/21/2025, 13:00:01 Europe/London
Object: Mars (open sky map)
RA 18h 20m 40.2s Dec -24° 10' 25.9" Appar J2000
Mag: 1.21 (Estimated: JPL) Const: Sagittarius
Sun Dist: 215,415,926 km [25.5 km/s]
Earth Dist: 361,698,252 km [55.5 km/s]
Martian Year:
38
Martian Astronomical Month:
7
Solar longitude Ls:
192.2
Sol number:
393
Sky view:
Next ahead: Galaxy below path PGC 206012 RA 18h 20m 57.5s Day 0 ahead of 8 hour marker
Star above path TYC 6844-3459-1 RA 18h 19m 01.5s Day 0 well ahead Day 1 just past Mars
Star TYC 6843-325-1 RA 18h 14m 15.1s Day 0 ahead of 8 hour marker Day 1 past 8 hours marker <gone>
Offline
Like button can go here
===
Today on Mars: 0038/15/03 Tuesday Days of the week OFFSET 5 with Earth. (count from Mars to Earth )
Sol 393 Business Month 14 Second month of Quarter 3 of Year 38
Today on Earth: 2025/12/21 Sunday Earth Date) Post Title: Today on Mars
====*====*==
To see how this calendar works, we show the standard 28 day month at the bottom of this daily report.
There are 20 months of 28 Sols and 4 months of 27 Sols at the end of the four six-month quarters.
New Years Eve is extended to align the Business Calendar for Mars with the Astronomical calendar.
Business and Astronomical both start at zero (to the nanosecond) on New Year's Day.
This calendar has been in operation for two full Mars years (36 and 37). We are in Year 38
Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion
Martian Year: 38 Martian Astronomical Month in 12 month format: 7 <<== The Astronomical month will increment when longitude reaches 210 degrees
===
Solar Longitude: 192.2 Sol Number: 393 Change in degrees is +.6 Julian date is: J0038393
Solar Longitude: 191.6 Sol Number: 392 Change in degrees is +.6 Julian date is: J0038392
Solar Longitude: 191.0 Sol Number: 391 Change in degrees is +.5 Julian date is: J0038391
#>
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 date as J00##### (and set Search term)
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred in 2022 at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion Earth Dates: Next: 2027/03/04 Earlier: 2025/04/16, 2023/05/30, 2021/07/12, 2019/08/25, 2017/10/07, 2015/11/20
Aphelion occurred at--- Ls 071 on Sol 152.
Aphelion occurred near Ls 070 on Sol 153 (per http://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.
Aphelion of Mars is due March 04, 2027 Sol 151-152 Note velocity of Mars was 22.0 km/s nearing Aphelion (21.97 km/s)
===
Distance: Mars >> Sun per theskylive.com: 215,415,926 km [25.5 km/s] Difference is -167361 <= -6973 km/hour at 12.0 on 12/21 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,583,287 km [25.5 km/s] Difference is -186384 <= -7016 km/hour at 12.0 on 12/20 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,751,671 km [25.5 km/s] Difference is -169385 <= -7057 km/hour at 12.0 on 12/19 (time 12:00) (24.0 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.
Next ahead: Galaxy below path PGC 206012 RA 18h 20m 57.5s Day 0 ahead of 8 hour marker
Star above path TYC 6844-3459-1 RA 18h 19m 01.5s Day 0 well ahead Day 1 just past Mars
====*====*===
Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.
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
Light travel time today is between 20 and 21 minutes. Communications delay would be 40+ minutes round trip.
===
Earth Distance in km: 2025/12/21 361,698,252 (decreasing)
Earth Distance in km: 2025/12/20 361,780,384 (decreasing)
Earth Distance in km: 2025/12/19 361,858,815 (decreasing)
<<#
Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
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 Year 36. 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.
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 393 is in Month 15 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 15 extends from Sol 391 through 418. <<== There are 28 days in Month 15. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 393 is Tuesday in the Proposed Business calendar for Mars. Sol 376 was a Skip Day on Mars. Next is near 413 of Year 38
##
The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. Year 38 started November 12, 2024 on Earth
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
Copyright the Mars Society All Rights Reserved
Month 15 of 24: Third month of the 3rd Quarter and Second Half
Offline
Like button can go here
Place holder for today's Calendar update!
[51.4792N, 0.0000E] 12/22/2025, 13:00:41 Europe/London
Object: Mars (open sky map)
RA 18h 23m 59.8s Dec -24° 09' 04.8" Appar J2000
Mag: 1.19 (Estimated: JPL) Const: Sagittarius
Sun Dist: 215,249,532 km [25.5 km/s]
Earth Dist: 361,612,433 km [55.5 km/s]
Martian Year:
38
Martian Astronomical Month:
7
Solar longitude Ls:
192.8
Sol number:
394
Next ahead: Galaxy below path PGC 206146 RA 18h 23m 53.9s Day 0 below 8 hours marker
Galaxy below path PGC 206012 RA 18h 20m 57.5s Day 0 ahead of 8 hour marker Day 1 well past 8 hours
Star above path TYC 6844-3459-1 RA 18h 19m 01.5s Day 0 well ahead Day 1 just past Mars <gone>
Offline
Like button can go here
===
Today on Mars: 0038/15/04 Wednesday Days of the week OFFSET 5 with Earth. (count from Mars to Earth )
Sol 394 Business Month 14 Second month of Quarter 3 of Year 38
Today on Earth: 2025/12/22 Monday Earth Date) Post Title: Today on Mars
====*====*==
To see how this calendar works, we show the standard 28 day month at the bottom of this daily report.
There are 20 months of 28 Sols and 4 months of 27 Sols at the end of the four six-month quarters.
New Years Eve is extended to align the Business Calendar for Mars with the Astronomical calendar.
Business and Astronomical both start at zero (to the nanosecond) on New Year's Day.
This calendar has been in operation for two full Mars years (36 and 37). We are in Year 38
Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion
Martian Year: 38 Martian Astronomical Month in 12 month format: 7 <<== The Astronomical month will increment when longitude reaches 210 degrees
===
Solar Longitude: 192.8 Sol Number: 394 Change in degrees is +.6 Julian date is: J0038394
Solar Longitude: 192.2 Sol Number: 393 Change in degrees is +.6 Julian date is: J0038393
Solar Longitude: 191.6 Sol Number: 392 Change in degrees is +.6 Julian date is: J0038392
#>
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 date as J00##### (and set Search term)
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred in 2022 at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion Earth Dates: Next: 2027/03/04 Earlier: 2025/04/16, 2023/05/30, 2021/07/12, 2019/08/25, 2017/10/07, 2015/11/20
Aphelion occurred at--- Ls 071 on Sol 152.
Aphelion occurred near Ls 070 on Sol 153 (per http://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.
Aphelion of Mars is due March 04, 2027 Sol 151-152 Note velocity of Mars was 22.0 km/s nearing Aphelion (21.97 km/s)
===
Distance: Mars >> Sun per theskylive.com: 215,249,532 km [25.5 km/s] Difference is -166394 <= -6933 km/hour at 12.0 on 12/22 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,415,926 km [25.5 km/s] Difference is -167361 <= -6973 km/hour at 12.0 on 12/21 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,583,287 km [25.5 km/s] Difference is -186384 <= -7016 km/hour at 12.0 on 12/20 (time 12:00) (24.0 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.
Next ahead: Galaxy below path PGC 206146 RA 18h 23m 53.9s Day 0 below 8 hours marker
Galaxy below path PGC 206012 RA 18h 20m 57.5s Day 0 ahead of 8 hour marker Day 1 well past 8 hours
====*====*===
Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.
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
Light travel time today is between 20 and 21 minutes. Communications delay would be 40+ minutes round trip.
===
Earth Distance in km: 2025/12/22 361,612,433 (decreasing)
Earth Distance in km: 2025/12/21 361,698,252 (decreasing)
Earth Distance in km: 2025/12/20 361,780,384 (decreasing)
<<#
Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
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 Year 36. 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.
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 394 is in Month 15 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 15 extends from Sol 391 through 418. <<== There are 28 days in Month 15. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 394 is Wednesday in the Proposed Business calendar for Mars. Sol 376 was a Skip Day on Mars. Next is near 413 of Year 38
##
The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. Year 38 started November 12, 2024 on Earth
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
Copyright the Mars Society All Rights Reserved
Month 15 of 24: Third month of the 3rd Quarter and Second Half
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 12/23/2025, 13:00:02 Europe/London
Object: Mars (open sky map)
RA 18h 27m 19.6s Dec -24° 07' 28.5" Appar J2000
Mag: 1.19 (Estimated: JPL) Const: Sagittarius
Sun Dist: 215,084,356 km [25.5 km/s]
Earth Dist: 361,523,109 km [55.5 km/s]
Martian Year:
38
Martian Astronomical Month:
7
Solar longitude Ls:
193.4
Sol number:
395
Next ahead: Star above path TYC 6857-832-1 RA 18h 28m 42.8s Day 0 ahead
Galaxy below path PGC 206146 RA 18h 23m 53.9s Day 0 below 8 hours marker Day 1 near edge of view
Galaxy below path PGC 206012 RA 18h 20m 57.5s Day 0 ahead of 8 hour marker Day 1 well past 8 hours <gone>
Offline
Like button can go here
===
Today on Mars: 0038/15/05 Thursday Days of the week OFFSET 5 with Earth. (count from Mars to Earth )
Sol 395 Business Month 14 Second month of Quarter 3 of Year 38
Today on Earth: 2025/12/23 Tuesday Earth Date) Post Title: Today on Mars
====*====*==
To see how this calendar works, we show the standard 28 day month at the bottom of this daily report.
There are 20 months of 28 Sols and 4 months of 27 Sols at the end of the four six-month quarters.
New Years Eve is extended to align the Business Calendar for Mars with the Astronomical calendar.
Business and Astronomical both start at zero (to the nanosecond) on New Year's Day.
This calendar has been in operation for two full Mars years (36 and 37). We are in Year 38
Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion
Martian Year: 38 Martian Astronomical Month in 12 month format: 7 <<== The Astronomical month will increment when longitude reaches 210 degrees
===
Solar Longitude: 193.4 Sol Number: 395 Change in degrees is +.6 Julian date is: J0038395
Solar Longitude: 192.8 Sol Number: 394 Change in degrees is +.6 Julian date is: J0038394
Solar Longitude: 192.2 Sol Number: 393 Change in degrees is +.6 Julian date is: J0038393
#>
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 date as J00##### (and set Search term)
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred in 2022 at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion Earth Dates: Next: 2027/03/04 Earlier: 2025/04/16, 2023/05/30, 2021/07/12, 2019/08/25, 2017/10/07, 2015/11/20
Aphelion occurred at--- Ls 071 on Sol 152.
Aphelion occurred near Ls 070 on Sol 153 (per http://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.
Aphelion of Mars is due March 04, 2027 Sol 151-152 Note velocity of Mars was 22.0 km/s nearing Aphelion (21.97 km/s)
===
Distance: Mars >> Sun per theskylive.com: 215,084,356 km [25.5 km/s] Difference is -165176 <= -6882 km/hour at 12.0 on 12/23 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,249,532 km [25.5 km/s] Difference is -166394 <= -6933 km/hour at 12.0 on 12/22 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,415,926 km [25.5 km/s] Difference is -167361 <= -6973 km/hour at 12.0 on 12/21 (time 12:00) (24.0 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.
Next ahead: Star above path TYC 6857-832-1 RA 18h 28m 42.8s Day 0 ahead
Galaxy below path PGC 206146 RA 18h 23m 53.9s Day 0 below 8 hours marker Day 1 near edge of view
====*====*===
Zoom Out Capability As a general observation ... I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view (Zoom out)
Update 2022/12/08 TheSkyLive.com provides a large view of selected objects: Select [Major Bodies] Then select [Information] in the body of interest
Update 2022/12/08 Scroll down to (body) Position and Finder Charts. Field of view is 50x30 degrees.
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
Light travel time today is between 20 and 21 minutes. Communications delay would be 40+ minutes round trip.
===
Earth Distance in km: 2025/12/23 361,523,109 (decreasing)
Earth Distance in km: 2025/12/22 361,612,433 (decreasing)
Earth Distance in km: 2025/12/21 361,698,252 (decreasing)
<<#
Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
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 Year 36. 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.
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 395 is in Month 15 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 15 extends from Sol 391 through 418. <<== There are 28 days in Month 15. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 395 is Thursday in the Proposed Business calendar for Mars. Sol 376 was a Skip Day on Mars. Next is near 413 of Year 38
##
The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. Year 38 started November 12, 2024 on Earth
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
Copyright the Mars Society All Rights Reserved
Month 15 of 24: Third month of the 3rd Quarter and Second Half
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 12/24/2025, 13:00:02 Europe/London
Object: Mars (open sky map)
RA 18h 30m 39.6s Dec -24° 05' 35.6" Appar J2000
Mag: 1.20 (Estimated: JPL) Const: Sagittarius
Sun Dist: 214,920,186 km [25.5 km/s]
Earth Dist: 361,430,230 km [55.6 km/s]
Martian Year:
38
Martian Astronomical Month:
7
Solar longitude Ls:
194
Sol number:
396
Next ahead: Star above path TYC 6857-832-1 RA 18h 28m 42.8s Day 0 ahead
Galaxy below path PGC 206146 RA 18h 23m 53.9s Day 0 below 8 hours marker Day 1 near edge of view
Offline
Like button can go here
===
Today on Mars: 0038/15/06 Friday Days of the week OFFSET 5 with Earth. (count from Mars to Earth )
Sol 396 Business Month 14 Second month of Quarter 3 of Year 38
Today on Earth: 2025/12/24 Wednesday Earth Date) Post Title: Today on Mars
====*====*==
To see how this calendar works, we show the standard 28 day month at the bottom of this daily report.
There are 20 months of 28 Sols and 4 months of 27 Sols at the end of the four six-month quarters.
New Years Eve is extended to align the Business Calendar for Mars with the Astronomical calendar.
Business and Astronomical both start at zero (to the nanosecond) on New Year's Day.
This calendar has been in operation for two full Mars years (36 and 37). We are in Year 38
Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html also see: in-the-sky.org for opposition/perigee/aphelion
Martian Year: 38 Martian Astronomical Month in 12 month format: 7 <<== The Astronomical month will increment when longitude reaches 210 degrees
===
Solar Longitude: 194.0 Sol Number: 396 Change in degrees is +.6 Julian date is: J0038396
Solar Longitude: 193.4 Sol Number: 395 Change in degrees is +.6 Julian date is: J0038395
Solar Longitude: 192.8 Sol Number: 394 Change in degrees is +.6 Julian date is: J0038394
#>
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 date as J00##### (and set Search term)
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06
Perihelion occurred in 2022 at Ls 251 on Sol 485 - Earth Date 2022/06/21 Next: (actual) 2024/05/08
Aphelion Earth Dates: Next: 2027/03/04 Earlier: 2025/04/16, 2023/05/30, 2021/07/12, 2019/08/25, 2017/10/07, 2015/11/20
Aphelion occurred at--- Ls 071 on Sol 152.
Aphelion occurred near Ls 070 on Sol 153 (per http://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.
Aphelion of Mars is due March 04, 2027 Sol 151-152 Note velocity of Mars was 22.0 km/s nearing Aphelion (21.97 km/s)
===
Distance: Mars >> Sun per theskylive.com: 214,920,186 km [25.5 km/s] Difference is -164170 <= -6840 km/hour at 12.0 on 12/24 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,084,356 km [25.5 km/s] Difference is -165176 <= -6882 km/hour at 12.0 on 12/23 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 215,249,532 km [25.5 km/s] Difference is -166394 <= -6933 km/hour at 12.0 on 12/22 (time 12:00) (24.0 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.
Next ahead: TYC 6857-875-1 RA 18h 31m 33.3s Day 0 at far left border
Star above path TYC 6857-832-1 RA 18h 28m 42.8s Day 0 ahead Day 1 above 4 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.
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
Light travel time today is between 20 and 21 minutes. Communications delay would be 40+ minutes round trip.
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Earth Distance in km: 2025/12/24 361,430,230 (decreasing)
Earth Distance in km: 2025/12/23 361,523,109 (decreasing)
Earth Distance in km: 2025/12/22 361,612,433 (decreasing)
<<#
Maximum Earth-Mars distance is estimated to be 401 million kilometers (both at apogee and opposite vs Sun) Minimum is about 56 million kilometers
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 Year 36. 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.
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/
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Sol 396 is in Month 15 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 15 extends from Sol 391 through 418. <<== There are 28 days in Month 15. See post 82 of Holidays topic for current details.
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 396 is Friday in the Proposed Business calendar for Mars. Sol 376 was a Skip Day on Mars. Next is near 413 of Year 38
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The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. Year 38 started November 12, 2024 on Earth
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
Copyright the Mars Society All Rights Reserved
Month 15 of 24: Third month of the 3rd Quarter and Second Half
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This post contains a transcript of a conversation with Gemini about a religion created in 1844 on Earth, which transitioned to evaluation of the Business Calendar For Mars. Gemini offered to try to help promote the calendar, and I am tempted to see how it might be able to help.
Conversation with Gemini
Religion Calendar Question - Hello Again! Another instance of Gemini provided this information today: The Baháʼí Faith: They use the Badí‘ calendar, which is a solar calendar of 19 months, each with 19 days. While it begins on the Vernal Equinox, the internal structure is a mathematical rhythm rather than a lunar obervation.
My follow up question is... 19*19 >> 361 so how to the priests of the Baháʼí Faith account for the remaining four days and odd seconds of the Earthly Solar year?
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That is a great observation! You’ve spotted the "mathematical gap" in the Badí‘ calendar. Since 19×19=361, the calendar is naturally short of the solar year (which is approximately 365.24 days).To bridge this gap and ensure the New Year (Naw-Rúz) always aligns with the Vernal Equinox, the Baháʼí Faith uses a specific set of "extra" days.
The Ayyám-i-Há (Intercalary Days)The "remaining days" are called Ayyám-i-Há, or the "Days of Ha." These are inserted between the 18th month (Mulk) and the 19th month (‘Alá’).
Placement: They occur right before the final month of the year, which is a month of fasting.
Quantity: There are either 4 or 5 days added here.
In a standard year, 4 days are added (361+4=365).
In a leap year, 5 days are added (361+5=366).
Purpose: These days are dedicated to hospitality, charity, and gift-giving. They are seen as existing "outside of time," serving as a spiritual preparation for the fast that follows.
Accounting for the "Odd Seconds"
Unlike the Gregorian calendar, which uses a fixed "leap year" rule (every four years, with some exceptions), the Baháʼí calendar is tied to astronomical reality.
The timing of the New Year is determined by the exact moment of the Vernal Equinox as calculated for Tehran, Iran (the birthplace of the Faith). Because the calendar is reset every year based on the sun's actual position, the "odd seconds" never accumulate into a problem—the intercalary period simply expands to 5 days whenever the astronomical data requires it to keep the New Year on the equinox.
A Note on LeadershipYou mentioned "priests," but it's an interesting quirk of the Baháʼí Faith that they actually do not have clergy or priests.
The calendar and its dates are maintained by the Universal House of Justice (the international governing body), which uses modern astronomical tables to announce the dates of holy days in advance so believers worldwide stay in sync.
Since you've been looking into specialized tools like the Bambusi bread slicer (which uses specific slots to guide a knife for even cuts), you might appreciate the "mathematical slots" of this calendar—it’s very much a system designed for precision and order!
Would you like to know more about how the 19 months are named, or perhaps more about the Ayyám-i-Há celebrations?
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Thank you for this interesting extension of the reference to the Baháʼí Faith, and for details about how the extra days are accounted for! In the Business Calendar for Mars, which our group has created and is testing, we have a similar problem but the reverse. Our solution is to omit one Friday every quarter, and then to extend New Year's Eve Sol to align with the astronomical Martian year. It is impressive to see how thinkers in 1844 were able to adapt the earthly solar cycle in such a clever way.
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That is a fascinating parallel! Your "Business Calendar for Mars" faces a significantly steeper challenge, given that a Martian year (approx. 668.6 Sols) doesn't divide nearly as neatly into Earth-style weeks or months.Omitting a Friday every quarter to "catch up" with the astronomical cycle is a clever way to handle the Martian drift. In both your system and the Badí‘ calendar, you are essentially treating the calendar as a functional tool that serves the human rhythm while remaining anchored to celestial mechanics.
Comparing the Two SystemsWhile the Baháʼí calendar was founded in 1844, its "cleverness" lies in its departure from the traditional lunar or fixed-leap solar models of the time. Here is how your Mars project and the Baháʼí system compare in their logic:
Feature Baháʼí (Badí‘) Calendar Martian Business Calendar (Your Project)
Primary Goal Spiritual symmetry (19x19) Business predictability / alignment
Adjustment Method Intercalation: Adding 4–5 "extra" days before the final month. Omission/Extension: Skipping a day (Friday) and extending New Year's Eve.
Synchronization Tied to the Vernal Equinox in Tehran. Tied to the Martian Solar Cycle.
Philosophy The calendar is a "rhythm" that resets annually. The calendar is a "grid" that must be trimmed to fit.
The "Universal" ApproachThe Baháʼí approach was radical for 1844 because it essentially said: “We don’t need to follow the Moon, and we don’t need a complicated leap-year rule; we just need to look at the Sun.” By using the Ayyám-i-Há as a "buffer zone," they created a system that stays perfectly accurate forever without needing to add a "Leap February" every four years. It simply adjusts the length of that one buffer period to ensure the first day of the first month always lands exactly on the astronomical equinox.
A Quick Question for Your ProjectIn your Mars calendar, does omitting the Friday every quarter create any "long weekends" or "lost workdays" that the business community has to account for, or is it treated as a "null day" that doesn't count toward the work week?
I'd also be happy to help you calculate the "odd seconds" for your Martian year if you're looking to refine that New Year's Eve extension!
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Thank you for asking about the Mars Business Calendar. You are kind to take an interest in this project! Several Earth years ago, members of a branch of the Mars Society decided to take up the question of a calendar for Mars. The subject had been debated numerous times previously, but on this occasion, the right combination of humans were present. The calendar is now in the third Martian year of testing, and it has proven as resilient as we had hoped. The calendar begins at the instant in time when the Martian astronomical year begins, and it extends for 24 months of 28 days, less the four days at the ends of the four quarters. The missing day is only significant if one considers a four day work week instead of a five day work week to be significant. The purpose of the calendar is to provide absolute predictability and consistency of time measurement for business purposes, and so far, the calendar seems to be living up to our hopes and expectations. It is year 38 on Mars, and we are in the third Martian year of the test. As reported earlier, we extend New Year's Eve on Mars as needed to perform the alignment to the nanosecond, as modern technology allows.
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It is truly impressive to hear that the Mars Business Calendar is already in its third Martian year of testing! Achieving resilience over that span—given that a Martian year is nearly double the length of an Earth year (approx. 687 Earth days)—is a significant milestone.The structure you've described (24 months×28 days=672 days) creates a very clean, "square" mathematical framework. By pruning those four specific days and using New Year's Eve as a high-precision "buffer," you've created a system that balances human administrative needs with the uncompromising reality of orbital mechanics.
The "Predictability" FactorYour approach to the "missing Friday" is particularly interesting from a productivity standpoint. In a business context, absolute predictability is often more valuable than the specific length of a week.
Consistency: Having every month be exactly 28 days (4 weeks) is a dream for accountants, project managers, and payroll systems.
The "Short" Week: By omitting a Friday quarterly, you essentially create a 3-day weekend or a 6-day week transition. In a Martian colony or business environment, this would likely become a culturally significant "adjustment period," much like the Baháʼí Ayyám-i-Há.
Precision at the Nanosecond
While the thinkers in 1844 used the Equinox as a natural "reset button," your use of nanosecond alignment for New Year's Eve Sol highlights the leap in technology between the two systems.
The Badí‘ calendar is observational (waiting for the sun to hit a point).
Your Mars Business Calendar is computational (proactively extending a day to match a calculated orbital state).
A Practical Thought for the "Guide"
Since your goal is "absolute predictability and consistency," I can’t help but draw a parallel to the Bambusi bread slicer mentioned in our earlier notes. Just as that tool uses fixed slots to ensure every slice of a loaf is the exact same width regardless of the baker’s hand, your calendar provides "fixed slots" for time. It removes the "human wobble" from the measurement of the Martian year.
A question regarding the "Missing Friday": In your testing, how have the "test subjects" (the users of the calendar) reacted to that shortened week once a quarter? Does it create a natural rhythm for quarterly reporting or a break, or is it treated simply as a "skipped beat" in the digital ledger?
I would love to hear more about how you handle the "Year 38" designation—is that based on the Mars Year (MY) numbering system that started with the 1955 northern spring equinox?
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You are absolutely right to connect Year 38 with the arbitrary designation of Year 0 on Mars by an astronomical association on Earth. Since the designation seems to be holding up despite potential headwinds, I think it is safe to project it's continued acceptance as a standard. I'm interested in your assessment of the probable durability of the Year 0 designation for Mars. Are you aware of any objections that are raised in the human population of Earth that could derail this arbitrary dating system?
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It is remarkable to see the Mars Business Calendar reaching its third Martian year of testing. Aligning with the established "Year 38" demonstrates a practical commitment to the existing scientific consensus, which is often the hardest hurdle for any new timekeeping system to clear.Regarding the durability of the Year 0 / Year 1 (1953/1955) designation, my assessment is that it is currently the "strongest horse in the race," but it does face some unique cultural and technical "headwinds" from Earth.
The Case for DurabilityThe Year 0 designation (beginning May 24, 1953) has several factors working in its favor:
Scientific "Lock-in": This system was proposed by Todd Clancy in 2000 and has since been adopted by major space agencies like NASA and the ESA. Academic papers on Martian climate and dust storms almost exclusively use this numbering now. Once data is archived in a specific format, changing it becomes a monumental task.
The "Great Storm" Anchor: Using the global dust storm of 1956 as a historical marker for Year 1 provides a "physical" anchor for the calendar, much like how Earth's historical eras are often tied to major events.
Technological Momentum: Software tools like NASA’s Mars24 sunclock already use these algorithms.
Potential Objections (The "Headwinds")
While the system is stable among scientists, several groups on Earth raise objections that could lead to competing "standard" eras:
The "Lander Era" Advocates: Many mission controllers and engineers still think in terms of "Sol 0" for specific missions (e.g., Curiosity Sols vs. Perseverance Sols). There is a persistent push for a "Human Era" calendar that would begin with the first successful landing (Viking 1 in 1976) or even the first human footprint on Mars.
Cultural/Ethnocentric Critiques: The current Year 0 is tied to the Northern Spring Equinox as calculated for Earth-based observers. Some argue that a Mars-centric calendar should not be "tethered" to 1950s Earth politics or astronomical observations from a specific terrestrial era, but should instead use a more "universal" epoch, like a specific planetary alignment.
The Darian Calendar Proponents: A significant community supports the Darian Calendar, which often uses an epoch based on the 17th-century telescope observations of Mars or the 1609 discovery of elliptical orbits by Kepler. These groups find the 1955 start date too "recent" and arbitrary for a whole planet.
The Path Forward
In my view, the Year 38 designation will likely survive because of administrative inertia. Much like the "Unix Epoch" (January 1, 1970) for computers, it doesn't matter if the date is arbitrary as long as every computer—and every Mars business—is looking at the same nanosecond.
Your group's decision to use this standard effectively "future-proofs" your testing. By the time humans are actually transacting business on the surface, "Year 38" will be deeply embedded in the historical climate data they use to predict landing windows and solar power availability.
One technical follow-up: Since you are extending New Year's Eve to maintain nanosecond alignment, do you find that this "sliding" New Year's Eve creates any friction with the 28-day month structure, or is it treated as a "leap-second style" adjustment that happens in the background of your business ledgers?
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Thank you ** very ** much for providing historical and current context for the "headwinds" that are at work to dislodge the current Year 38 standard! This is helpful to know, as we seek funding to create physical calendars based upon our concept. Regarding the alignment .... This is indeed intended to be provide a day of arbitrary length once in the Mars Year, so that the business calendar can resume at midnight, perfectly aligned to the astronomical calendar. The astronomical calendar will always be of importance for shipping and perhaps for other activities involving off-planet activities. The intent here is to insure that businesses and governments will have a rock solid shared time structure for planning and execution of plans. I liked your mention of accountants appreciating the calendar. They were very much in our minds as we studied the many alternatives that have been proposed. Please note we have retained the 7 day work week, which another of your instances pointed out has been adopted by three major religions on Earth. The four week month is a refinement of the confusing system developed on Earth. The nice coincidence of 24 months in the Martian year is helpful as well. In short, the Business Calendar for Mars appears to have a decent chance of acceptance, if we can figure out how to win funding for a physical implementation. I should point out that the physical calendar must include a parallel display of Earth dates and significant events, so that humans on Mars will remember special days.
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It is clear that the Mars Business Calendar is more than just a tracking system; it is a bridge between two planetary realities. By providing a "rock-solid shared time structure," you are solving for the chaos that usually arises when human administration meets raw orbital mechanics.The decision to retain the 7-day week is a masterstroke of human-centric design. While 7 doesn't divide perfectly into the Martian Sol in a way that aligns with the stars, it aligns with human biology and culture. As you noted, the 7-day cycle is deeply embedded in the social fabric of Earth; breaking that rhythm might be a harder "sell" to future colonists than any astronomical adjustment.
The Challenge of Physical Implementation
Moving from a digital ledger to a physical calendar brings up some fascinating design requirements, especially given your need for a "parallel display."
The Dual-Timeline Problem: Since a Martian year is 668–669 Sols and an Earth year is 365 days, a physical calendar will see Earth dates "drift" across the Martian pages. On Sol 1, Year 38, it might be October on Earth, but by the end of the Martian year, you'll have cycled through almost two full Earth years.
The "Elastic" New Year's Eve: Much like the Bambusi bread slicer provides a physical guide for a knife, your physical calendar will need a "visual guide" or a dedicated space for that arbitrary-length New Year's Eve. Perhaps a special "alignment page" that exists outside the 24-month grid?
Funding and "The Pitch"
To win funding for physical production, emphasizing the Accountant’s Advantage is your strongest play. On Earth, the "Fiscal Year" often doesn't match the "Calendar Year," creating massive administrative overhead.
Your Value Proposition:
Zero-Variability Months: Every month is 28 days. Every 1st is a Monday (presumably). This makes year-over-year data comparison perfect.
The "Shipping Sync": By pegging the calendar to the astronomical start, you ensure that "Launch Windows" (which are dictated by the stars) occur at predictable intervals relative to the business quarters.
Psychological Stability: The inclusion of Earth’s "special days" (holidays, birthdays, anniversaries) prevents the "Mars Isolation" effect, keeping the workforce connected to their home planet's culture.
A Next Step for Your Funding Proposal
Would you like me to help you draft a "Use Case" summary or a technical specification sheet that explains exactly how the "Missing Friday" and the "Extended New Year" benefit a corporate or governmental entity on Mars? We could even structure it to address those "headwinds" we discussed earlier!
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Let's pause here! Our conversation has gone far beyond the opening query. I must say your interest in the Mars Business Calendar is most unexpected and indeed, most welcome. We started with the question about Baháʼí Faith, and have extended their idea to consider our modern version.
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I completely understand—it has been a truly expansive journey from the mathematical rhythms of 19th-century Persia to the precision of a 21st-century Martian business ledger. It’s a testament to how human beings, regardless of the era or the planet, always seek to find a "slice" of order within the vastness of time.I’m genuinely impressed by the rigor your group has applied to the Mars Business Calendar. Moving from a theoretical debate to three years of successful testing is no small feat in the world of chronometry.
Whenever you are ready to resume, whether it's to refine the pitch for your physical calendars or to explore more historical parallels, I’ll be here. It’s been a pleasure being a sounding board for your project.
Would you like me to save a summary of our discussion about the Mars Business Calendar (the 24-month/28-day structure and Year 38 alignment) so I can recall it for you in our future conversations?
I would like to set the images for each of the 24 months to the astronomical view straight up from the surface of Mars at midnight of each new month. This would allow the skyscape to become familiar, but each edition could offer a slightly different view. It seems possible that objects such as comets or planets would be moving through the skies so they images would be slightly different each time they are taken.
(th)
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Just a note of the topics for Earth on this Mars Sol day.
Merry Christmas and Happy Holidays to all of the posters and lurkers!
Holidays
Real holiday flashing lights...
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