alt Hacker NewsUTC for past events doesn't always work either. For example, historical employee punch-in times.
UTC timestamps should only ever be used for points in time in the most literal sense, and nothing else.
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Terr_ • yesterday at 10:28 PM
If past timestamps (UTC or otherwise) are unreliable, then there is some kind of math-bug going on.
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Why not? It sounds like it would be correct even if the employee has a shift that includes a offset change.
Future timestamps should be local because local timezone changes literally change the instant the event it will happen (relative to UTC). For past things, this can’t happen