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Old December 1st 18, 11:46 AM posted to sci.astro.amateur
Gerald Kelleher
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Default Lat/Long and timekeeping system for Mars

It took many, many millions of years for life on Earth to adapt to the 24 hour cycle notwithstanding the annual day/night cycle.

The same system which applies on Earth can be transferred in principle to Mars although the proportion of rotations to an annual circuit is different (and the application of a leap day correction) , the orientation of the planet is slightly different giving a more polar climate spectrum to the planet.