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 March 24th, 2019, 07:39 PM #1 Banned Camp   Joined: Mar 2019 From: Mumbai Posts: 66 Thanks: 3 GMT on Mars planet. https://en.m.wikipedia.org/wiki/Greenwich_Mean_Time Is it possible to define Greenwich Mean time (GMT) on other planets? For example : Mars - Currently explored for Life existence. Thanks & Regards, Prashant S Akerkar
 March 24th, 2019, 07:46 PM #2 Math Team     Joined: May 2013 From: The Astral plane Posts: 2,205 Thanks: 901 Math Focus: Wibbly wobbly timey-wimey stuff. Seeing that the city Greenwich is on Earth, I doubt it. But maybe someone will start a colony. This is not a Physics question. Please think of using the Lounge, that's what it's there for. -Dan
March 25th, 2019, 02:17 AM   #3
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Quote:
 Originally Posted by prashantak https://en.m.wikipedia.org/wiki/Greenwich_Mean_Time Is it possible to define Greenwich Mean time (GMT) on other planets? For example : Mars - Currently explored for Life existence. Thanks & Regards, Prashant S Akerkar
We would have to define a separate clock system because a Mars day is not the same length as an Earth day. However, some inspiration could be taken from the UTC system.

March 25th, 2019, 03:06 AM   #4
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 Originally Posted by Benit13 We would have to define a separate clock system because a Mars day is not the same length as an Earth day. However, some inspiration could be taken from the UTC system.
Thanks.

Does it mean that the Mars day is not following the 24 hour length similar to Earth Day and AM, PM?

So Mars day = How many Hours?

Thanks & Regards,
Prashant S Akerkar

 March 25th, 2019, 03:32 AM #5 Global Moderator   Joined: Dec 2006 Posts: 20,757 Thanks: 2138 A Mars day is about 24 hours and 37 minutes. Also Mars has a tilted axis of rotation, much as Earth has. Thus a Martian version of GMT, together with a corresponding daylight savings system, could easily be implemented. However, the clocks would be adjusted less frequently (in comparison to clocks on Earth), as the Mars year is very roughly twice as long as an Earth year.
March 25th, 2019, 04:52 AM   #6
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 Originally Posted by skipjack ....as the Mars year is very roughly twice as long as an Earth year.
.....so your annual salary would double?

March 25th, 2019, 05:29 AM   #7
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Quote:
 Originally Posted by skipjack A Mars day is about 24 hours and 37 minutes. Also Mars has a tilted axis of rotation, much as Earth has. Thus a Martian version of GMT, together with a corresponding daylight savings system, could easily be implemented. However, the clocks would be adjusted less frequently (in comparison to clocks on Earth), as the Mars year is very roughly twice as long as an Earth year.
Thanks. As you mention, Mars year is very roughly twice as long as an Earth year.

So a Mars year is approximately 365 * 2 days?

Thanks & Regards,
Prashant S Akerkar

 March 25th, 2019, 05:55 AM #8 Global Moderator   Joined: Dec 2006 Posts: 20,757 Thanks: 2138 There are about 670 Martian days (which is about 687 Earth days) to a Martian year.
March 25th, 2019, 06:48 AM   #9
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Quote:
 Originally Posted by skipjack A Mars day is about 24 hours and 37 minutes. Also Mars has a tilted axis of rotation, much as Earth has. Thus a Martian version of GMT, together with a corresponding daylight savings system, could easily be implemented. However, the clocks would be adjusted less frequently (in comparison to clocks on Earth), as the Mars year is very roughly twice as long as an Earth year.
Why would you bother with "daylight saving"?

March 26th, 2019, 06:23 AM   #10
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Quote:
 Originally Posted by v8archie Why would you bother with "daylight saving"?
Martian farmers, obviously

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