In adjusting the values for Mars using the clear principles which refer timekeeping to the daily and orbital motions of the Earth and even hypothetical adjustments such as assigning the Earth a different proportion of rotations per orbital circuit to construct a different calendar system, there is no excuse for denying Mars its own timekeeping systems.

It is more that the Earth's timekeeping systems are masterpieces on their own or in combination yet they do have limitations in their close proximity to daily and orbital motions and how these two dynamics relate to each other.