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by benj111 2674 days ago
The problem you are always going to have is that the inhabitants of each planet will want their 'days' to line up with their day/night cycles. So even without relativity, you aren't going to get a unified date system that works for everyone.

If that's the case Unix time then becomes a decent option, because it's equally human unreadable to everyone. Each planet can then have their own calendar based on that, and computers can deal with the nitty gritty