Imagine thinking that’ll be the biggest date-related computing problem for a galactic society.
If you really want to make programmers despair, point out:
- massive variations in day, month and year lengths on different worlds.
- some worlds may not have “months” (no moons, or many moons).
- ambiguous definition of “year” for multi-star systems.
- days may be longer than years (hello Venus).
- communication latency across interstellar distances.
- tine dilation.