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From: Michael Heerdegen via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
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Subject: Re: calculating relative time until a day of week
Date: Mon, 08 Jul 2024 03:05:02 +0200
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Christopher Howard <christopher@librehacker.com> writes:

> Hi, I want to make an Emacs timer that runs a command once a week,
> every Tuesday at 4am. I could do this with run-at-time and a relative
> time, but I would need to calculate how many seconds until Tuesday
> 4am. Is there an easy way to calcuate that?

Depending on what that command is for, an answer might be "Use diary and
appointments"  Or org-mode.

Michael.