Hacker News Reader

This is already the case on earth. UTC is defined at sea level and clocks run faster at higher elevations due to the lower gravitational redshift. This effect is easily observable with atomic clocks and has to be taken into account in any accurate clock comparison.

That is not taken into account in timezones though, because it would depend on where you live. For MTC it probably is accounted for to some extent.

This was a plot point in Cory Doctorow’s Martian Chronicles:

https://escapepod.org/2019/10/03/escape-pod-700-martian-chro...

Disclaimer: Mostly just posting this to plug Escape Pod. No affiliation, but it’s one of my favorite short fiction podcasts.

The design needed to accommodate leap seconds, https://en.wikipedia.org/wiki/DUT1 due to planetary rotation adjustments, would be fun. So much of how we define time is rooted in the Suns movement.

Then you start to get the new factor of planetary distance wobble adjustments. Which will be fun as you start to add https://en.wikipedia.org/wiki/Three-body_problem into time models.