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by lmm 4675 days ago
>I thought it's supposed to be an external format. I'd always expect a computer system presenting the output information to the user in his local time zone, while accepting inputs from all time zones equally.

We're talking about a web API here, not user display. But even so, IME users don't think of their timezones as "+8" or the like, so for human I/O you want to use symbolic timezone names, not offsets.