ESA has expressed interest in having a coordinated time on the moon, as highlighted in this market: https://manifold.markets/Ernie/will-the-moon-have-its-own-time-zon?r=dGhlbWlnaHR5c2FsbW9u Currently on the Earth, there are 38 different offsets from UTC in use**, with the most recent change occurring in 2015 (one was lost). https://en.wikipedia.org/wiki/Time_zone **The number 38 represents the number of different "Standard Times". I will ignore Daylight Savings/Summer time for the purposes of resolving the market.