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Date: Sun, 24 Mar 2024 19:05:54 +0000
From: Alexander Weps <>
Subject: Re: Broken mktime calculations when crossing DST boundary

Provide struct tm that was passed as an argument.


On Sunday, March 24th, 2024 at 20:01, Joakim Sindholt <> wrote:

> On Sun, 24 Mar 2024 18:36:40 +0000, Alexander Weps wrote:
> > But there cannot be a case where you have normalized time add
> > something, normalize and create normalized time that is lower and vice
> > versa.
> I'm curious. How do you imagine mktime, which takes only 1 parameter and
> has no memory, deduces that to get the presently invalid 02:00:00
> timestamp it's looking at you added 1 second to a valid 01:59:59
> timestamp rather than say, subtracting 1 hour from a valid 03:00:00
> timestamp?

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