Native Martians have their own concept of time; just like a typical white male CIS-gendered anglo-saxon Germanic Indo-European Westerner to assume they will be welcoming of your concept of ‘time’. But this is a good thought experiment; when, or if, and I don’t really care if it’s either ‘if’ or ‘when’, subhuman scum that is the homosapiens goes to another planet to jerk off there, just as God cast us from Eden unto earth, what would be the temporal and calenderial considerations? I guess the current spacemen have something worked out?

This book says there are two types of calendars. Those arithmetic, and those astronomical. Calendars could be both. For example, this book mentions the Astronomical Persian calendar, but there’s also an arithmetic one. Arithmetic calendars are based on numbers, astronomical ones are based on stars.

I guess humans, on other planets, would have this eternal sense of ‘jetlag’ or ‘rocketlag’ in this case, which would mean all types of astronomical calendars would be out of question. Our scum ape bodies has adapted to this distance from this star we call ‘the Sun’ (which I believe earns its name from the great mythological figures, ‘Which a Chance of Meatballs’) so an arithmetic calendar will probably used in Mars.

Now I just read this book, and half-assedly, so I am not commentarian on the matter of calendars, so maybe it will turn out that on Mars, an astronomical calendar would work best?

I shan’t see, as I hopefully be dead by that time.