[X] My Assistant

[dot.dk]

One martian year coming up in a few hours!

Nov. 19, 12:23:40 PM UTC if my math is correct

It's hard to describe what a fantastic achivement this is. So I'll just say:



Let's keep on roving!


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[jvandriel]

For more information about Mars and scientific publications look at the following website:


http://marsjournal.org/



jvandriel

[helvick]

I'm not sure if I totally agree dot.dk's calculation of the exact timing of the birthsol but the Birthday card is so damn fine that I need to beg his forgiveness for being a nit pick.

Sol 1 started on the Midnight before Spirit's landing.
There are 668.5921 Sols in a Martian tropical year.
It can be argued that the Marsiversary Sol should therefore start on Sol 669. *
However the the exact timing of the passing of 1 Martian year from the start of Sol 1 takes place at 14.21 local Martian time on Spirit Sol 669 due the 0.5921 fractional part.
Spirit landed at 14:26 local time (LST-A) on Sol-1 so the timing of 1 Martian year after that actually occurs at 4:47 on Sol 670.

* Using Earth Dates and Days.
Landing: January 4 2004 at 04:36 UTC.
Martian tropical year (in days) 686.9725.
Add the two and you get 03:56 on November 21 2005 for the actual event.

[ElkGroveDan]

It can be argued that the Marsiversary Sol should therefore start on Sol 669. *
However the the exact timing of the passing of 1 Martian year from the start of Sol 1 takes place at 14.21 local Martian time on Spirit Sol 669 due the 0.5921 fractional part.
Spirit landed at 14:26 local time (LST-A) on Sol-1 so the timing of 1 Martian year after that actually occurs at 4:47 on Sol 670.

* Using Earth Dates and Days.
Landing: January 4 2004 at 04:36 UTC.
Martian tropical year (in days) 686.9725.
Add the two and you get 03:56 on November 21 2005 for the actual event.

Great calculations. Now can you tell us how many angels can dance on the head of a pin?