I know this isn't any kind of surprise, and yet, well...
this post was submitted on 01 Dec 2023
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In every project I've ever worked on, there's been somebody who must have been like, "HurDur Storing timestamps in UTC is for losers. Nyeaahh!"
And if I ever find that person, I'm going to get one of those foam pool noodles, and whack him/her over the head with it until I've successfully vented all my frustrations.
I just use a float between 0 and 1 with 0 being 1970 and 1 being the predicted heat death of the universe.
The only time using UTC breaks down is when any sort of time change gets involved.
If I say I want a reminder at 9am six months from now and you store that as UTC, a day light savings change will mean I get my reminder an hour early or late depending on where in the world I am
But wouldn't you calculate the time in the future in the right time zone and then store it back as UTC?
It depends on the application.
I don't remember all the specifics but this is the blog post I refer to when this topic comes up
https://codeblog.jonskeet.uk/2019/03/27/storing-utc-is-not-a-silver-bullet/