[csdtx]

I wonder how time zones on other planets would work once relativistic time dilation has to be considered. Add a multiplier to how fast your clock ticks? I suppose satellites should have this problem already resolved but only in Earth's sphere of influence.

Also simply travelling to Mars would desynchronize the time and would have to be resynced.

[jeremyjh]

GPS systems have already had to solve this and from what I can make of it, its a fully general solution that could be ported to mars etc. https://jimlambskeptic.com/gps-and-time-dilation/