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Jiff is a new date-time library for Rust that encourages you to jump into the pit of success (github.com)

submitted 3 months ago by [email protected] to c/[email protected]

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[–] [email protected] 1 points 3 months ago

You should look at it, they say the implement RFC 9556 timestamps, which include tz info. In my experience it IS useful in real use, because a fixed offset timestamp can lose a bit of information.

For example, if you have a timestamp and want to add a few months to it, for example for a reminder, you will get a timestamp at the same time in the same offset. In many cases that will be wrong, because of things like daylight savings time, which change the offset of the timezone. You will get a timestamp an hour before or after the moment you intended, and it will be in the "wrong" offset in that timezone in that time of year. With timezone aware timestamps, they are aware that the offset will change, and will be able to give a timestamp in the future at the correct time and offset.