You are not logged in.
Place holder for today's Calendar update;
[51.4792N, 0.0000E] 07/15/2026, 13:00:02 Europe/London
Object: Mars [open sky map]
RA 04h 41m 02.0s Dec +22° 04' 17.6" Appar J2000
Mag: 1.33 (Estimated: JPL) Const: Taurus
Current ID: 240297
Total number of registered users: 19,630
Total number of topics: 9,070
Total number of posts: 235,979
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 102
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/09 Monday Days of the week OFFSET 2 with Earth. (count from Mars to Earth )
Sol 594 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/15 Wednesday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 318.6 Sol Number: 594 Change in degrees is +.6 Julian date is: J0038594
Solar Longitude: 318.0 Sol Number: 593 Change in degrees is +.5 Julian date is: J0038593
Solar Longitude: 317.5 Sol Number: 592 Change in degrees is +.6 Julian date is: J0038592
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 218,277,556 km [25.2 km/s] Difference is +180945 <= +7539 km/hour at 12.0 on 07/15 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,096,611 km [25.2 km/s] Difference is +180202 <= +7508 km/hour at 12.0 on 07/14 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 217,916,409 km [25.2 km/s] Difference is +179428 <= +7476 km/hour at 12.0 on 07/13 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star below path TYC 1279-102-1 RA 4h 41m 16.5s
Star above path TYC 1278-260-1 RA 4h 38m 11.4s Day 2 past 9 hours marker
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 306 megaKm
Earth Distance in km: 2026/07/15 308,143,597 (decreasing)
Earth Distance in km: 2026/07/14 308,660,525 (decreasing)
Earth Distance in km: 2026/07/13 309,172,033 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 594 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 22 extends from Sol 586 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 594 is Monday in the Proposed Business calendar for Mars. Sol 558 Skip Day on Mars. Next is near 558+37 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 07/16/2026, 13:00:00 Europe/London
Object: Mars [open sky map]
RA 04h 43m 59.6s Dec +22° 10' 32.6" Appar J2000
Mag: 1.33 (Estimated: JPL) Const: Taurus
Current ID 240308
Total number of registered users: 19,630
Total number of topics: 9,074
Total number of posts: 236,007
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 109
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/10 Tuesday Days of the week OFFSET 2 with Earth. (count from Mars to Earth )
Sol 595 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/16 Thursday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 319.2 Sol Number: 595 Change in degrees is +.6 Julian date is: J0038595
Solar Longitude: 318.6 Sol Number: 594 Change in degrees is +.6 Julian date is: J0038594
Solar Longitude: 318.0 Sol Number: 593 Change in degrees is +.5 Julian date is: J0038593
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 218,459,227 km [25.2 km/s] Difference is +181671 <= +7570 km/hour at 12.0 on 07/16 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,277,556 km [25.2 km/s] Difference is +180945 <= +7539 km/hour at 12.0 on 07/15 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,096,611 km [25.2 km/s] Difference is +180202 <= +7508 km/hour at 12.0 on 07/14 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: missed update
TYC 1279-102-1 RA 4h 41m 16.5s
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 306 megaKm
Earth Distance in km: 2026/07/16 307,621,243 (decreasing)
Earth Distance in km: 2026/07/15 308,143,597 (decreasing)
Earth Distance in km: 2026/07/14 308,660,525 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 595 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 22 extends from Sol 586 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 595 is Tuesday in the Proposed Business calendar for Mars. Sol 558 Skip Day on Mars. Next is near 558+37 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for Calendar update for Friday.
[51.4792N, 0.0000E] 07/17/2026, 13:01:31 Europe/London
Object: Mars [open sky map]
RA 04h 46m 57.4s Dec +22° 16' 35.6" Appar J2000
Mag: 1.33 (Estimated: JPL) Const: Taurus
Current ID: 240359
Total number of registered users: 19,630
Total number of topics: 9,075
Total number of posts: 236,040
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 119
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/10 Tuesday Days of the week OFFSET 2 with Earth. (count from Mars to Earth ) << SkipDayOnMars
Sol 595 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/17 Friday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 319.7 Sol Number: 595 Change in degrees is +.5 Julian date is: J0038595 << SkipDayOnMars
Solar Longitude: 319.2 Sol Number: 595 Change in degrees is +.6 Julian date is: J0038595
Solar Longitude: 318.6 Sol Number: 594 Change in degrees is +.6 Julian date is: J0038594
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 218,641,805 km [25.1 km/s] Difference is +182578 <= +7607 km/hour at 12.0 on 07/17 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,459,227 km [25.2 km/s] Difference is +181671 <= +7570 km/hour at 12.0 on 07/16 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,277,556 km [25.2 km/s] Difference is +180945 <= +7539 km/hour at 12.0 on 07/15 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star in path: TYC 1279-1084-1 RA 4h 47m 55.6s
TYC 1279-102-1 RA 4h 41m 16.5s Day 3 found at lower right corner before screen update
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 306 megaKm
Earth Distance in km: 2026/07/17 307,092,896 (decreasing)
Earth Distance in km: 2026/07/16 307,621,243 (decreasing)
Earth Distance in km: 2026/07/15 308,143,597 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 595 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 595 is Tuesday in the Proposed Business calendar for Mars. Sol 558 Skip Day on Mars. Next is near 558+37 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update
[51.4792N, 0.0000E] 07/18/2026, 13:00:12 Europe/London
Object: Mars [open sky map]
RA 04h 49m 55.4s Dec +22° 22' 25.1" Appar J2000
Mag: 1.34 (Estimated: JPL) Const: Taurus
Current ID: 240375
Total number of registered users: 19,630
Total number of topics: 9,076
Total number of posts: 236,056
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 181
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/11 Wednesday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 596 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/18 Saturday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 320.3 Sol Number: 596 Change in degrees is +.6 Julian date is: J0038596
Solar Longitude: 319.7 Sol Number: 595 Change in degrees is +.5 Julian date is: J0038595 << SkipDayOnMars
Solar Longitude: 319.2 Sol Number: 595 Change in degrees is +.6 Julian date is: J0038595
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 218,824,715 km [25.1 km/s] Difference is +182910 <= +7621 km/hour at 12.0 on 07/18 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,641,805 km [25.1 km/s] Difference is +182578 <= +7607 km/hour at 12.0 on 07/17 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,459,227 km [25.2 km/s] Difference is +181671 <= +7570 km/hour at 12.0 on 07/16 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star in path: TYC 1292-31-1 RA 4h 50m 36.4 s
Star in path: TYC 1279-1084-1 RA 4h 47m 55.6s Day 2 between 4.5 and 9 hour markers
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 306 megaKm
Earth Distance in km: 2026/07/18 306,560,170 (decreasing)
Earth Distance in km: 2026/07/17 307,092,896 (decreasing)
Earth Distance in km: 2026/07/16 307,621,243 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 596 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 596 is Wednesday in the Proposed Business calendar for Mars. Sol 558 Skip Day on Mars. Next is near 558+37 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 07/19/2026, 13:00:27 Europe/London
Object: Mars [open sky map]
RA 04h 52m 53.6s Dec +22° 28' 02.7" Appar J2000
Mag: 1.35 (Estimated: JPL) Const: Taurus
Current ID: 240401
Total number of registered users: 19,630
Total number of topics: 9,078
Total number of posts: 236,084
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 128
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/12 Thursday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 597 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/19 Sunday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 320.9 Sol Number: 597 Change in degrees is +.6 Julian date is: J0038597
Solar Longitude: 320.3 Sol Number: 596 Change in degrees is +.6 Julian date is: J0038596
Solar Longitude: 319.7 Sol Number: 595 Change in degrees is +.5 Julian date is: J0038595 << SkipDayOnMars
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 219,008,496 km [25.1 km/s] Difference is +183781 <= +7658 km/hour at 12.0 on 07/19 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,824,715 km [25.1 km/s] Difference is +182910 <= +7621 km/hour at 12.0 on 07/18 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,641,805 km [25.1 km/s] Difference is +182578 <= +7607 km/hour at 12.0 on 07/17 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star above path HIP 22691 RA 4h 52m 45.9s
Star in path: TYC 1292-31-1 RA 4h 50m 36.4 s Day 2 just ahead of 9 hours marker
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 306 megaKm
Earth Distance in km: 2026/07/19 306,021,456 (decreasing)
Earth Distance in km: 2026/07/18 306,560,170 (decreasing)
Earth Distance in km: 2026/07/17 307,092,896 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 597 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 597 is Thursday in the Proposed Business calendar for Mars. Sol 558 Skip Day on Mars. Next is near 558+37 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update:
51.4792N, 0.0000E] 07/20/2026, 13:00:00 Europe/London
Object: Mars [open sky map]
RA 04h 55m 51.1s Dec +22° 33' 27.4" Appar J2000
Mag: 1.35 (Estimated: JPL) Const: Taurus
Current ID: 240432
Total number of registered users: 19,630
Total number of topics: 9,080
Total number of posts: 236,113
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 228
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/13 Friday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 598 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/20 Monday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 321.4 Sol Number: 598 Change in degrees is +.5 Julian date is: J0038598
Solar Longitude: 320.9 Sol Number: 597 Change in degrees is +.6 Julian date is: J0038597
Solar Longitude: 320.3 Sol Number: 596 Change in degrees is +.6 Julian date is: J0038596
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 219,192,840 km [25.1 km/s] Difference is +184344 <= +7681 km/hour at 12.0 on 07/20 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 219,008,496 km [25.1 km/s] Difference is +183781 <= +7658 km/hour at 12.0 on 07/19 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 218,824,715 km [25.1 km/s] Difference is +182910 <= +7621 km/hour at 12.0 on 07/18 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Stars above and below path TYC 1832-1154-1 RA 4h 57m 31.2s
Star above path HIP 22691 RA 4h 52m 45.9s Day 2 Still visible well past 9 hours marker
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 288 megaKm
Earth Distance in km: 2026/07/20 305,477,589 (decreasing)
Earth Distance in km: 2026/07/19 306,021,456 (decreasing)
Earth Distance in km: 2026/07/18 306,560,170 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 598 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 598 is Friday in the Proposed Business calendar for Mars. Sol 595 Skip Day on Mars. Next is near 632 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update
[51.4792N, 0.0000E] 07/21/2026, 13:00:02 Europe/London
Object: Mars [open sky map]
RA 04h 58m 48.8s Dec +22° 38' 39.9" Appar J2000
Mag: 1.36 (Estimated: JPL) Const: Taurus
Current ID: 240451
Total number of registered users: 19,630
Total number of topics: 9,080
Total number of posts: 236,132
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 196
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/14 Saturday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 599 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/21 Tuesday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 322.0 Sol Number: 599 Change in degrees is +.6 Julian date is: J0038599
Solar Longitude: 321.4 Sol Number: 598 Change in degrees is +.5 Julian date is: J0038598
Solar Longitude: 320.9 Sol Number: 597 Change in degrees is +.6 Julian date is: J0038597
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 219,377,882 km [25.1 km/s] Difference is +185042 <= +7710 km/hour at 12.0 on 07/21 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 219,192,840 km [25.1 km/s] Difference is +184344 <= +7681 km/hour at 12.0 on 07/20 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 219,008,496 km [25.1 km/s] Difference is +183781 <= +7658 km/hour at 12.0 on 07/19 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star below path HIP 23247 RA 05h 00m 09.8s
Stars above and below path TYC 1832-1154-1 RA 4h 57m 31.2s Day 2 past Mars
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 288 megaKm
Earth Distance in km: 2026/07/21 304,928,116 (decreasing)
Earth Distance in km: 2026/07/20 305,477,589 (decreasing)
Earth Distance in km: 2026/07/19 306,021,456 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 599 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 599 is Saturday in the Proposed Business calendar for Mars. Sol 595 Skip Day on Mars. Next is near 632 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update
[51.4792N, 0.0000E] 07/22/2026, 13:05:22 Europe/London << late due to local power outage
Object: Mars [open sky map]
RA 05h 01m 47.0s Dec +22° 43' 40.8" Appar J2000
Mag: 1.37 (Estimated: JPL) Const: Taurus
Total number of registered users: 19,630
Total number of topics: 9,082
Total number of posts: 236,156
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 181
Online: tahanson43206
Current ID: 240475
Offline
Like button can go here
===
Today on Mars: 0038/22/15 Sunday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 600 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/22 Wednesday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 322.6 Sol Number: 600 Change in degrees is +.6 Julian date is: J0038600
Solar Longitude: 322.0 Sol Number: 599 Change in degrees is +.6 Julian date is: J0038599
Solar Longitude: 321.4 Sol Number: 598 Change in degrees is +.5 Julian date is: J0038598
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 219,564,224 km [25.0 km/s] Difference is +186342 <= +7764 km/hour at 12.1 on 07/22 (time 12:06) (24.1 hours)
Distance: Mars >> Sun per theskylive.com: 219,377,882 km [25.1 km/s] Difference is +185042 <= +7710 km/hour at 12.0 on 07/21 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 219,192,840 km [25.1 km/s] Difference is +184344 <= +7681 km/hour at 12.0 on 07/20 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star above path TYC 1845-705-1 RA 5h 02m 34.3s
Star below path HIP 23247 RA 05h 00m 09.8s Day 2 just past Mars
Stars above and below path TYC 1832-1154-1 RA 4h 57m 31.2s Day 2 past Mars Day 3 still visible before reset
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 288 megaKm
Earth Distance in km: 2026/07/22 304,564,224 (decreasing)
Earth Distance in km: 2026/07/21 304,928,116 (decreasing)
Earth Distance in km: 2026/07/20 305,477,589 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 600 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 600 is Sunday in the Proposed Business calendar for Mars. Sol 595 Skip Day on Mars. Next is near 632 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 07/23/2026, 13:00:00 Europe/London
Object: Mars [open sky map]
RA 05h 04m 43.5s Dec +22° 48' 27.1" Appar J2000
Mag: 1.37 (Estimated: JPL) Const: Taurus
Current ID: 240491
Total number of registered users: 19,630
Total number of topics: 9,082
Total number of posts: 236,172
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 75
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/16 Monday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 601 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/23 Thursday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 323.1 Sol Number: 601 Change in degrees is +.5 Julian date is: J0038601
Solar Longitude: 322.6 Sol Number: 600 Change in degrees is +.6 Julian date is: J0038600
Solar Longitude: 322.0 Sol Number: 599 Change in degrees is +.6 Julian date is: J0038599
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 219,749,779 km [25.0 km/s] Difference is +185555 <= +7731 km/hour at 12.1 on 07/23 (time 12:00) (23.9 hours)
Distance: Mars >> Sun per theskylive.com: 219,564,224 km [25.0 km/s] Difference is +186342 <= +7764 km/hour at 12.1 on 07/22 (time 12:06) (24.1 hours)
Distance: Mars >> Sun per theskylive.com: 219,377,882 km [25.1 km/s] Difference is +185042 <= +7710 km/hour at 12.0 on 07/21 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star trio TYC 1845-397-1 RA 5h 5m 47.2s
Star above path TYC 1845-705-1 RA 5h 02m 34.3s Day 2 between 4.5 and 9 markers
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 288 megaKm
Earth Distance in km: 2026/07/23 303,812,866 (decreasing)
Earth Distance in km: 2026/07/22 304,564,224 (decreasing)
Earth Distance in km: 2026/07/21 304,928,116 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 601 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 601 is Monday in the Proposed Business calendar for Mars. Sol 595 Skip Day on Mars. Next is near 632 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 07/24/2026, 13:00:00 Europe/London
Object: Mars [open sky map]
RA 05h 07m 41.1s Dec +22° 53' 02.6" Appar J2000
Mag: 1.36 (Estimated: JPL) Const: Taurus
Total number of registered users: 19,630
Total number of topics: 9,082
Total number of posts: 236,188
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 113
Online: tahanson43206
Current ID 240507
Offline
Like button can go here
===
Today on Mars: 0038/22/17 Tuesday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 603 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/24 Friday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 323.7 Sol Number: 602 Change in degrees is +.6 Julian date is: J0038602
Solar Longitude: 323.1 Sol Number: 601 Change in degrees is +.5 Julian date is: J0038601
Solar Longitude: 322.6 Sol Number: 600 Change in degrees is +.6 Julian date is: J0038600
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 219,936,605 km [25.0 km/s] Difference is +186826 <= +7784 km/hour at 12.1 on 07/24 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 219,749,779 km [25.0 km/s] Difference is +185555 <= +7731 km/hour at 12.1 on 07/23 (time 12:00) (23.9 hours)
Distance: Mars >> Sun per theskylive.com: 219,564,224 km [25.0 km/s] Difference is +186342 <= +7764 km/hour at 12.1 on 07/22 (time 12:06) (24.1 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: above path galaxy PGC 1679453 RA 5h 7m 46.1s
Star trio TYC 1845-397-1 RA 5h 5m 47.2s Day 2 above 4.5 hours marker
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 288 megaKm
Earth Distance in km: 2026/07/24 303,247,014 (decreasing)
Earth Distance in km: 2026/07/23 303,812,866 (decreasing)
Earth Distance in km: 2026/07/22 304,564,224 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 602 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 602 is Tuesday in the Proposed Business calendar for Mars. Sol 595 Skip Day on Mars. Next is near 632 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update
[51.4792N, 0.0000E] 07/25/2026, 13:00:00 Europe/London
Object: Mars [open sky map]
RA 05h 10m 38.7s Dec +22° 57' 24.6" Appar J2000
Mag: 1.36 (Estimated: JPL) Const: Taurus
Current ID 240518
Total number of registered users: 19,630
Total number of topics: 9,083
Total number of posts: 236,199
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 60
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/18 Wednesday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 603 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/25 Saturday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 324.2 Sol Number: 603 Change in degrees is +.5 Julian date is: J0038603
Solar Longitude: 323.7 Sol Number: 602 Change in degrees is +.6 Julian date is: J0038602
Solar Longitude: 323.1 Sol Number: 601 Change in degrees is +.5 Julian date is: J0038601
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 220,123,990 km [25.0 km/s] Difference is +187385 <= +7808 km/hour at 12.0 on 07/24 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 219,936,605 km [25.0 km/s] Difference is +186826 <= +7784 km/hour at 12.0 on 07/24 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 219,749,779 km [25.0 km/s] Difference is +185555 <= +7731 km/hour at 12.0 on 07/23 (time 12:00) (23.9 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star above path HIP 24151 RA 5h 11m 11.4s
above path galaxy PGC 1679453 RA 5h 7m 46.1s Day 2 Still visible on far right
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 288 megaKm
Earth Distance in km: 2026/07/25 302,675,634 (decreasing)
Earth Distance in km: 2026/07/24 303,247,014 (decreasing)
Earth Distance in km: 2026/07/23 303,812,866 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 603 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 603 is Wednesday in the Proposed Business calendar for Mars. Sol 595 Skip Day on Mars. Next is near 632 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 07/26/2026, 13:00:11 Europe/London
Object: Mars [open sky map]
RA 05h 13m 35.8s Dec +23° 01' 34.7" Appar J2000
Mag: 1.35 (Estimated: JPL) Const: Taurus
Current ID: 240534
Total number of registered users: 19,630
Total number of topics: 9,083
Total number of posts: 236,214
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 181
Online: tahanson43206
Offline
Like button can go here
===
Today on Mars: 0038/22/19 Thursday Days of the week OFFSET 3 with Earth. (count from Mars to Earth )
Sol 604 Business Month 22 Fourth month of Quarter 4 of Year 38
Today on Earth: 2026/07/26 Sunday Earth Date)
>16
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
This calendar is NOT the Darian Calendar!
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 Interval in 12 interval format: 11 <<== The Astronomical interval
Check Longitude: the interval will increment when longitude reaches 330 degrees
===
Solar Longitude: 324.8 Sol Number: 604 Change in degrees is +.6 Julian date is: J0038604
Solar Longitude: 324.2 Sol Number: 603 Change in degrees is +.5 Julian date is: J0038603
Solar Longitude: 323.7 Sol Number: 602 Change in degrees is +.6 Julian date is: J0038602
#4>
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 2026 at Ls 251 on Sol 486 - Earth Date 2026/03/27 Next: (estimated) 2028/05/15
Perihelion occurred in 2024 at Ls 251 on Sol 485 - Earth Date 2024/05/08 Next: (estimated) 2026/03/06 (actual) 2026/03/26
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)
Perhelion of Mars is due May, 2028 Sol 251 Note velocity of Mars was 26.5 km/s nearing Perhelion 2026/03/26
===
Distance: Mars >> Sun per theskylive.com: 220,311,938 km [25.0 km/s] Difference is +187948 <= +7831 km/hour at 12.0 on 07/26 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 220,123,990 km [25.0 km/s] Difference is +187385 <= +7808 km/hour at 12.0 on 07/25 (time 12:00) (24.0 hours)
Distance: Mars >> Sun per theskylive.com: 219,936,605 km [25.0 km/s] Difference is +186826 <= +7784 km/hour at 12.0 on 07/24 (time 12:00) (24.0 hours)
>13
Velocity along the orbit is NOT the same thing as velocity change of the radial distance to the Sun. Both are shown in the section above.
j
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 in Taurus
Next ahead: Star above path TYC 1846-2090-1 RA 5h 13m 50s
Star above path HIP 24151 RA 5h 11m 11.4s day 2 above 9 hours marker
14>
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 17 and 18 minutes. Communications delay would be 34+ minutes round trip.
=== Time estimate will change below 288 megaKm
Earth Distance in km: 2026/07/26 302,098,615 (decreasing)
Earth Distance in km: 2026/07/25 302,675,634 (decreasing)
Earth Distance in km: 2026/07/24 303,247,014 (decreasing)
6<#
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
This web site offers an online orrery view of the Solar System: https://www.theplanetstoday.com/
===
Sol 604 is in Month 22 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary. <<< 595 is skip day on Mars
Month 22 extends from Sol 586 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 604 is Thursday in the Proposed Business calendar for Mars. Sol 595 Skip Day on Mars. Next is near 632 of Year 38 595
##
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 22 of 24: <<== Fourth month of Quarter 4
Offline
Like button can go here
Place holder for today's Calendar update:
[51.4792N, 0.0000E] 07/27/2026, 13:00:02 Europe/London
Object: Mars [open sky map]
RA 05h 16m 32.4s Dec +23° 05' 32.3" Appar J2000
Mag: 1.35 (Estimated: JPL) Const: Taurus
Total number of registered users: 19,630
Total number of topics: 9,084
Total number of posts: 236,238
Newest registered user: Redfoot-2026
Registered users online: 1
Guests online: 152
Online: tahanson43206
Current ID 240558
Offline
Like button can go here