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#1176 2021-09-13 07:23:18

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/17  Tuesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/13 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

One day note: According to my Astronomical Themed calendar, Mars and the Sun will be in conjunction (as seen from Earth) on October 7th.
What I am looking forward to seeing is whether the online display by theskylive.com shows the Sun in the vicinity of Mars. Recently we (forum readers) noted the appearance of Mercury as it passed by Mars.  I would expect something similar when the Sun appears in the display, except how the programmers handle an object of that size and optical magnitude is going to be interesting to watch.

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 098.3  Sol Number: 212  Change in degrees is +.4
Previous SL:      097.9  Previous Sol:211

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   246,359,697 km [22.3 km/s] Difference is -095089 <= 3729 km/hour at 9.0 on 09/13 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   246,454,786 km [22.2 km/s] Difference is -088090 <= 3670 km/hour at 7.5 on 09/12 (time:7:30)
Distance: Mars >> Sun per theskylive.com:   246,542,876 km [22.2 km/s] Difference is -088159 <= 3613 km/hour at 7.5 on 09/11 (time:7:30)

Next up: Galaxy closest to path PGC 1184974 RA 11h 57m 59.5s Day 0 11 hours ahead
A pair: TYC 273-548-1 Magnitude 12.05 above and TYC 273-644-1 Magnitude 10.21 below about 10 hours ahead on Day 0 - Day 0 about 10 hours behind
We have on mini-Boomer in the view, and a ** lot ** of galaxies! I counted 36 and probably missed a couple.  UGC 6903 RA 11h 55m 36.4s is broadside!

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 212 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 212 is Tuesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1177 2021-09-14 08:27:28

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/18  Wednesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/14 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 098.7  Sol Number: 213  Change in degrees is +.4
Previous SL:      098.3  Previous Sol:212

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   246,266,912 km [22.3 km/s] Difference is -092785 <= 3787 km/hour at 9.5 on 09/14 (time:9:30)
Distance: Mars >> Sun per theskylive.com:   246,359,697 km [22.3 km/s] Difference is -095089 <= 3729 km/hour at 9.0 on 09/13 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   246,454,786 km [22.2 km/s] Difference is -088090 <= 3670 km/hour at 7.5 on 09/12 (time:7:30)

Next up: We have an asterism amid a cluster of galaxies: TYC 280-472-1 Magnitude 10.29 in path Day 0 about 15 hours ahead
Galaxy closest to path PGC 1184974 RA 11h 57m 59.5s Day 0 11 hours ahead- Day 1 about 11 hours behind
We have one mini-Boomer in the view, and a ** lot ** of galaxies! For record: HIP 58375

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 213 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 213 is Wednesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1178 2021-09-15 06:24:57

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/19  Thursday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/15 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 099.2  Sol Number: 214  Change in degrees is +.5
Previous SL:      098.7  Previous Sol:213

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   246,182,368 km [22.3 km/s] Difference is -084544 <= 3843 km/hour at 7.5 on 09/15 (time:7:30)
Distance: Mars >> Sun per theskylive.com:   246,266,912 km [22.3 km/s] Difference is -092785 <= 3787 km/hour at 9.5 on 09/14 (time:9:30)
Distance: Mars >> Sun per theskylive.com:   246,359,697 km [22.3 km/s] Difference is -095089 <= 3729 km/hour at 9.0 on 09/13 (time:9:00)

Next up: HIP 58700 Magnitude 7.81 below path and about 11 hours ahead
TYC 280-472-1 Magnitude 10.29 in path Day 0 about 15 hours ahead - Day 1 right at the 5.5 hour marker behind Mars
We have one mini-Boomer in the view, and a ** lot ** of galaxies! For record: HIP 58700

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 214 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 214 is Thursday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1179 2021-09-16 09:15:54

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/20  Friday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/16 Thursday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 099.6  Sol Number: 215  Change in degrees is +.4
Previous SL:      099.2  Previous Sol:214

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   246,086,957 km [22.3 km/s] Difference is -095411 <= 3895 km/hour at 8.0 on 09/16 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   246,182,368 km [22.3 km/s] Difference is -084544 <= 3843 km/hour at 7.5 on 09/15 (time:7:30)
Distance: Mars >> Sun per theskylive.com:   246,266,912 km [22.3 km/s] Difference is -092785 <= 3787 km/hour at 9.5 on 09/14 (time:9:30)

Next up: Star TYC 280-449-1 Magnitude 9.38 Below path Day 0 about 8 hours ahead of Mars
HIP 58700 Magnitude 7.81 below path and about 11 hours ahead - Day 1 near the edge of the view and more than 11 hours past
We have one mini-Boomer in the view, and a ** lot ** of galaxies! For record: HIP 58700

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 215 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 215 is Friday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1180 2021-09-17 05:36:24

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/21  Saturday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/17 Friday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 100.1  Sol Number: 216  Change in degrees is +.5
Previous SL:      099.6  Previous Sol:215

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   245,996,065 km [22.3 km/s] Difference is -090892 <= 3952 km/hour at 7.0 on 09/17 (time:7:00)
Distance: Mars >> Sun per theskylive.com:   246,086,957 km [22.3 km/s] Difference is -095411 <= 3895 km/hour at 8.0 on 09/16 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   246,182,368 km [22.3 km/s] Difference is -084544 <= 3843 km/hour at 7.5 on 09/15 (time:7:30)

Next up: A star and galaxy pair: PGC 1155743 RA 12h 07m 51.8s Star TYC 280-321-1 Magnitude 10.63 in path Day 0 about 15 hours ahead
Star TYC 280-449-1 Magnitude 9.38 Below path Day 0 about 8 hours ahead of Mars - Day 1 at edge of view about 11 hours past Mars

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 216 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 216 is Saturday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1181 2021-09-18 06:31:45

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/22  Sunday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/18 Saturday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 100.5  Sol Number: 217  Change in degrees is +.4
Previous SL:      100.1  Previous Sol:216

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   245,895,893 km [22.3 km/s] Difference is -100172 <= 4007 km/hour at 8.0 on 09/18 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,996,065 km [22.3 km/s] Difference is -090892 <= 3952 km/hour at 7.0 on 09/17 (time:7:00)
Distance: Mars >> Sun per theskylive.com:   246,086,957 km [22.3 km/s] Difference is -095411 <= 3895 km/hour at 8.0 on 09/16 (time:8:00)

Next up: Both pairs are about 16 hours ahead on Day 0
Next up: Pairs of galaxies above and below the path: Below are PGC 38725 and PGC 1146376; Above are PGC 1150318 and PGC 38746
Mars just passed through a quadrangle shaped asterism - it is close to being a square-No Boomers today-plenty of galaxies are in the scene
PGC 1155743 RA 12h 07m 51.8s Star TYC 280-321-1 Magnitude 10.63 in path Day 0 about 15 hours ahead - Day 1 about 8 hours behind

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 217 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 217 is Sunday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1182 2021-09-19 07:54:50

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/23  Monday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/19 Sunday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 101.0  Sol Number: 218  Change in degrees is +.5
Previous SL:      100.5  Previous Sol:217

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   245,794,311 km [22.3 km/s] Difference is -101582 <= 4063 km/hour at 9.0 on 09/19 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   245,895,893 km [22.3 km/s] Difference is -100172 <= 4007 km/hour at 8.0 on 09/18 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,996,065 km [22.3 km/s] Difference is -090892 <= 3952 km/hour at 7.0 on 09/17 (time:7:00)

Next up: Galaxy PGC 1141197 RA 12h 12 m 33.8s in path Day 0 about 15 hours ahead
Both pairs are about 16 hours ahead on Day 0 - on Day 1 the galaxies are all showing at about 5.5 hours past Mars
Pairs of galaxies above and below the path: Below are PGC 38725 and PGC 1146376; Above are PGC 1150318 and PGC 38746

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 218 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 218 is Monday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1183 2021-09-20 08:05:26

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/24  Tuesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/20 Monday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 101.4  Sol Number: 219  Change in degrees is +.4
Previous SL:      101.0  Previous Sol:218

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   245,699,565 km [22.3 km/s] Difference is -094746 <= 4119 km/hour at 8.0 on 09/20 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,794,311 km [22.3 km/s] Difference is -101582 <= 4063 km/hour at 9.0 on 09/19 (time:9:00)
Distance: Mars >> Sun per theskylive.com:   245,895,893 km [22.3 km/s] Difference is -100172 <= 4007 km/hour at 8.0 on 09/18 (time:8:00)

Next up: HIP 58733 Magnitude 8.78 above path Day - about 15 hours ahead.
There are three mini-Boomers on the scene today.  There are more galaxies than I care to count. 
Galaxy PGC 1141197 RA 12h 12 m 33.8s in path Day 0 about 15 hours ahead - Day 1 about 8 hours behind

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 219 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 219 is Tuesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1184 Yesterday 07:32:39

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/25  Wednesday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/21 Tuesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 101.9  Sol Number: 220  Change in degrees is +.5
Previous SL:      101.4  Previous Sol:219

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   245,597,280 km [22.3 km/s] Difference is -102285 <= 4175 km/hour at 8.5 on 09/21 (time:8:30)
Distance: Mars >> Sun per theskylive.com:   245,699,565 km [22.3 km/s] Difference is -094746 <= 4119 km/hour at 8.0 on 09/20 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,794,311 km [22.3 km/s] Difference is -101582 <= 4063 km/hour at 9.0 on 09/19 (time:9:00)

Next up: Two galaxies just below path: PGC 1127204 RA 12h 17m 32.0s and PGC 1126921 Day 0 about 15 hours ahead
HIP 58733 Magnitude 8.78 above path Day - about 15 hours ahead. - Day 1 about 10 hours behind
There are two mini-Boomers on the scene today.  There are ** way ** more galaxies than I care to count. 

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,100,123
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 220 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 220 is Wednesday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

Offline

#1185 Today 07:09:05

tahanson43206
Moderator
Registered: 2018-04-27
Posts: 7,297

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

Today on Mars: 0036/08/26  Thursday <<-- Days of the week are not in alignment with Earth. 

Today on Earth: 2021/09/22 Wednesday (Earth Date) Post Title: Today on Mars   [Perihelion occurred August 3, 2020 Earth Calendar]

Per http://www-mars.lmd.jussieu.fr/mars/tim … _time.html

Martian Year: 36  Martian Month in 12 month format: 4 <<== The Astronomical month will increment when longitude reaches 120 degrees

Solar Longitude: 102.3  Sol Number: 221  Change in degrees is +.4
Previous SL:      101.9  Previous Sol:220

Note that Solar Longitude measurement varies as a function of location in orbit. 

Note#2: https://theskylive.com/mars-tracker  This web site shows the astronomical position of Mars.
Minus prefix means Mars is approaching the Sun.  Perihelion occurred at Ls 253 on Sol 485 - Earth Date 2020/08/03
Plus prefix means Mars is moving away from the Sun. Aphelion occurred on Sol 152 at 71 degrees Ls.
Aphelion occurred near 70 degrees Ls on Sol 153 (per www.planetary.org)

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

Distance: Mars >> Sun per theskylive.com:   245,497,935 km [22.3 km/s] Difference is -099345 <= 4227 km/hour at 8.0 on 09/22 (time:8:00)
Distance: Mars >> Sun per theskylive.com:   245,597,280 km [22.3 km/s] Difference is -102285 <= 4175 km/hour at 8.5 on 09/21 (time:8:30)
Distance: Mars >> Sun per theskylive.com:   245,699,565 km [22.3 km/s] Difference is -094746 <= 4119 km/hour at 8.0 on 09/20 (time:8:00)

Next up: Star TYC 4940-264-1 Magnitude 11.20 below path Day 0 about 11 hours ahead
Next up: Galaxy PGC 1124430 RA 12h 19m 46.6s above path Day 0 about 15 hours ahead
Two galaxies just below path: PGC 1127204 RA 12h 17m 32.0s and PGC 1126921 Day 0 about 15 hours ahead - Day 1 about 5 hours behind
There are ** way ** more galaxies than I care to count.  NGC 4202 is close enough to have a clear shape. Magnitude is given as 14.50.

As a general observation ... In recent days I've become increasingly interested in knowing what the larger view of the sky might be like.
The site: theskylive.com does a terrific job of matching the view from Earth towards Mars, against a background of actual astronomical plates.
I wish there were a way (or rather, I wish I ** knew ** about a way that may exist) to enlarge the view until the entire galaxy is in view.
Update 2021/07/30 I wrote to an astronomer to ask if there might be a web site with a view showing the galaxy in context of a given view.

Note: The curve of the path of Mars as seen against the background of stars is now a line trending noticeably down and East as seen from Earth
In recent days, the curve has been slowly bending down through horizontal.  Earth Distance at last update here) was km 394,640,041
Mars and Earth are approaching opposition.  The two planets will soon be on opposite sides of the Sun. Earth Distance will reach a maximum.
Light travel in one second is (about) 300,000 kilometers. The distance covered in one minute is about 18,000,000 kilometers.
Light travel time today is between 21 and 22 minutes. Communications delay would be 42+ minutes round trip. [21:390,000,000] [22:420,000,000]

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

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

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

Sol 221 is in Month 08 of a Proposed 24 month calendar. See Post 19 of Holidays topic for a summary.
Month 08 extends from Sol 196 through 223. See post 82 of Holidays topic for current details. <<== There are 28 days in Month 08
Direct path to source: http://newmars.com/forums/viewtopic.php … 57#p154257
Sol 221 is Thursday  in the Proposed Business calendar for Mars.  <<== Skip day occurred August 25th the next skip day is expected October 1 on Earth

The Next New Year's on Mars will occur when Solar Longitude reaches 360 degrees. <<== The current year on Mars is 36
Per www.planetary.org this occurred February 7, 2021 (on Earth). The new Mars Year is 36.

The next Skip Day will occur in October (1st on Earth. A Skip Day occurs when the longer Mars Sol accumulates 24 Earth hours.
For those who may be following this proposed calendar closely, there exists a "feature" I had not anticipated.
Days of the week fall behind Earth due to the longer Sol, but they gain when Friday is omitted at the end of a Quarter
337 Earth days were observed to elapse in the 2020 weekday cycle. There were 7 week day transitions and 2 Quarter ends.

Also notable in October (on Earth) will be the conjunction of the Sun with Mars. That event ** should ** be visible in the daily theskylive.com display.
The date I am watching for is October 7th, 2021.

For current weather on Mars see:

   ***https://mars.nasa.gov/insight/weather/***
   ***Insights weather info has been suspended and now is directing to msl***

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

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

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

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

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

Month 8 of 24: - Quarter 2 of 4 [Months 7-12] (This month has 28 days)

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