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Re: difference in seconds between two formatted dates ...

From Greg Wooledge <greg@wooledge.org>
Newsgroups linux.debian.user
Subject Re: difference in seconds between two formatted dates ...
Date 2023-12-25 18:40 +0100
Message-ID <HOX5M-g4wx-9@gated-at.bofh.it> (permalink)
References (5 earlier) <HNj0J-f0E4-1@gated-at.bofh.it> <HNk6t-f1lG-1@gated-at.bofh.it> <HNkpP-f1Qd-1@gated-at.bofh.it> <HNqvf-f5rz-3@gated-at.bofh.it> <HOVdD-g3pI-1@gated-at.bofh.it>
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On Mon, Dec 25, 2023 at 03:35:04PM +0000, Albretch Mueller wrote:
> On 12/21/23, Greg Wooledge <greg@wooledge.org> wrote:
> > So... this is interesting.  Apparently timedatectl doesn't simply look
> > at the target of /etc/localtime.  There's a DELAY before the value is
> > correctly reported.  This tells me that timedatectl is in communication
> > with some process (perhaps PID 1, I don't know), and this other process
> > only discovers that /etc/localtime has changed after some time has passed.
> > Is it *polling*?  I have no idea, but that's what it looks like.
> 
>  This thread has taken a life of its own and I have learned quite a
> bit from our back and forth. This is not how I intuitively thought it
> worked. I thought you had to actively ask the OS to update itself ...
> Now I am interested in learning all there is to be learned from this
> whole time keeping methodology and how it relates to systemd and the
> boot process.

Be sure to read the other responses to that message.  There's a weird
timing issue caused by the fact that running "timedatectl" triggers
a service process to run, unless one is already running.  This service
process only stays running for 30 seconds, and it only reads the
/etc/localtime symlink when it starts up.

So, if you've already got one running, it won't pick up a changed
/etc/localtime.  But if you wait until the current one dies, then the
*next* one will.

I have no idea why this subsystem was designed to work this way.  It
seems awkward to me, but I'll give them the benefit of the doubt
for now -- there's probably *some* reason to do it this way, even if
it's not immediately clear to me.

>  Is there a way to start the Linux kernel of a Debian Live running
> instance enabling you to log the whole process (in a more in depth way
> than dmesg) and then go "follow tcp" for each listed process in dmesg
> as you do with wireshark?

If you want to see what a process is doing, there's strace.  It can
even be told to follow all the children of a process (strace -f).

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Thread

difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-17 11:20 +0100
  Re: difference in seconds between two formatted dates ... Andy Smith <andy@strugglers.net> - 2023-12-17 12:00 +0100
    Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-17 12:10 +0100
      Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-17 16:30 +0100
        Re: difference in seconds between two formatted dates ... "Andrew M.A. Cater" <amacater@einval.com> - 2023-12-17 17:00 +0100
        Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-17 17:10 +0100
        Re: difference in seconds between two formatted dates ... Andy Smith <andy@strugglers.net> - 2023-12-17 17:40 +0100
          Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-17 23:50 +0100
          Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-18 00:10 +0100
            Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-18 01:40 +0100
              Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-18 02:20 +0100
                Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-18 07:00 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-18 07:10 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-18 13:20 +0100
                Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-18 14:10 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-18 14:20 +0100
                date can't parse its own output was: difference in seconds between  two formatted dates ...) <tomas@tuxteam.de> - 2023-12-18 14:40 +0100
                Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-18 19:40 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-18 20:20 +0100
                Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-20 07:10 +0100
                Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-20 08:40 +0100
                Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-21 06:00 +0100
                Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-21 06:40 +0100
                Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-22 02:30 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-21 13:20 +0100
                RTC and (old) Windows [was: difference in seconds between two  formatted dates ...] <tomas@tuxteam.de> - 2023-12-21 13:30 +0100
                Re: RTC and (old) Windows [was: difference in seconds between two  formatted dates ...] David Christensen <dpchrist@holgerdanske.com> - 2023-12-21 23:30 +0100
                Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-22 02:40 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-22 04:10 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-20 08:50 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-20 13:20 +0100
                Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-20 13:40 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-20 14:20 +0100
                Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-20 14:40 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-20 16:10 +0100
                Re: difference in seconds between two formatted dates ... Nicolas George <george@nsup.org> - 2023-12-20 16:30 +0100
                systemd and timezone (was: Re: difference in seconds between two  formatted dates ...) Max Nikulin <manikulin@gmail.com> - 2023-12-21 04:50 +0100
                Re: systemd and timezone (was: Re: difference in seconds between two  formatted dates ...) <tomas@tuxteam.de> - 2023-12-21 07:00 +0100
                Re: systemd and timezone Max Nikulin <manikulin@gmail.com> - 2023-12-21 17:10 +0100
                Re: systemd and timezone Nicholas Geovanis <nickgeovanis@gmail.com> - 2023-12-22 02:00 +0100
                Re: systemd and timezone Andy Smith <andy@strugglers.net> - 2023-12-22 13:50 +0100
                Re: systemd and timezone (was: Re: difference in seconds between two  formatted dates ...) Jeffrey Walton <noloader@gmail.com> - 2023-12-21 17:30 +0100
                Re: systemd and timezone (was: Re: difference in seconds between two  formatted dates ...) tomas@tuxteam.de - 2023-12-21 18:40 +0100
                Re: systemd and timezone (was: Re: difference in seconds between two  formatted dates ...) Dan Ritter <dsr@randomstring.org> - 2023-12-21 15:30 +0100
                Re: systemd and timezone (was: Re: difference in seconds between two  formatted dates ...) <tomas@tuxteam.de> - 2023-12-21 16:10 +0100
                Re: systemd and timezone (was: Re: difference in seconds between two  formatted dates ...) Nicolas George <george@nsup.org> - 2023-12-21 23:00 +0100
                Re: systemd and timezone gene heskett <gheskett@shentel.net> - 2023-12-22 01:00 +0100
                Re: systemd and timezone Max Nikulin <manikulin@gmail.com> - 2023-12-22 13:50 +0100
                Re: systemd and timezone <tomas@tuxteam.de> - 2023-12-22 14:40 +0100
                Re: systemd and timezone Greg Wooledge <greg@wooledge.org> - 2023-12-22 15:20 +0100
                Re: systemd and timezone David Wright <deblis@lionunicorn.co.uk> - 2023-12-22 16:50 +0100
                Re: systemd and timezone Greg Wooledge <greg@wooledge.org> - 2023-12-22 17:30 +0100
                Re: systemd and timezone "Arno Lehmann, ITS" <al@its-lehmann.de> - 2023-12-22 20:20 +0100
                Re: systemd and timezone Greg Wooledge <greg@wooledge.org> - 2023-12-22 21:00 +0100
                Re: systemd and timezone David Wright <deblis@lionunicorn.co.uk> - 2023-12-22 20:50 +0100
                Re: systemd and timezone Greg Wooledge <greg@wooledge.org> - 2023-12-22 21:20 +0100
                Re: systemd and timezone David Wright <deblis@lionunicorn.co.uk> - 2023-12-23 07:20 +0100
                Re: systemd and timezone Sven Joachim <svenjoac@gmx.de> - 2023-12-22 21:20 +0100
                Re: systemd and timezone Greg Wooledge <greg@wooledge.org> - 2023-12-22 22:40 +0100
                Re: systemd and timezone David Wright <deblis@lionunicorn.co.uk> - 2023-12-23 00:30 +0100
                Re: systemd and timezone Pocket <pocket@columbus.rr.com> - 2023-12-23 00:50 +0100
                Re: systemd and timezone Pocket <pocket@columbus.rr.com> - 2023-12-23 01:10 +0100
                Re: systemd and timezone David Wright <deblis@lionunicorn.co.uk> - 2023-12-23 07:20 +0100
                Re: Support for SysV service scripts deprecated in systemd 255 (was:  systemd and timezone) Felix Miata <mrmazda@earthlink.net> - 2023-12-23 08:10 +0100
                Re: systemd and timezone Pocket <pocket@columbus.rr.com> - 2023-12-23 12:10 +0100
                Re: systemd and timezone Nate Bargmann <n0nb@n0nb.us> - 2023-12-23 02:00 +0100
                Re: systemd and timezone Greg Wooledge <greg@wooledge.org> - 2023-12-23 02:20 +0100
                Re: systemd and timezone <tomas@tuxteam.de> - 2023-12-22 17:10 +0100
                Re: systemd and timezone Jeffrey Walton <noloader@gmail.com> - 2023-12-22 21:00 +0100
                Re: systemd and timezone Nicolas George <george@nsup.org> - 2023-12-22 23:40 +0100
                Re: systemd and timezone Charles Kroeger <mbone@gmx.co.uk> - 2024-01-06 03:30 +0100
                Re: systemd and timezone Greg Wooledge <greg@wooledge.org> - 2024-01-06 05:30 +0100
                Re: systemd and timezone gene heskett <gheskett@shentel.net> - 2024-01-06 06:40 +0100
                tzdata-legacy [was: Re: systemd and timezone] Max Nikulin <manikulin@gmail.com> - 2024-01-06 07:20 +0100
                Re: tzdata-legacy [was: Re: systemd and timezone] Max Nikulin <manikulin@gmail.com> - 2024-01-06 08:10 +0100
                Re: tzdata-legacy [was: Re: systemd and timezone] Nate Bargmann <n0nb@n0nb.us> - 2024-01-06 10:20 +0100
                Re: tzdata-legacy [was: Re: systemd and timezone] gene heskett <gheskett@shentel.net> - 2024-01-06 13:10 +0100
                Re: tzdata-legacy [was: Re: systemd and timezone] Greg Wooledge <greg@wooledge.org> - 2024-01-06 16:10 +0100
                Re: tzdata-legacy [was: Re: systemd and timezone] David Wright <deblis@lionunicorn.co.uk> - 2024-01-07 18:30 +0100
                was: Re: tzdata-legacy [was: Re: systemd and timezone] gene heskett <gheskett@shentel.net> - 2024-01-06 13:00 +0100
                Re: was: Re: tzdata-legacy [was: Re: systemd and timezone] John Hasler <john@sugarbit.com> - 2024-01-06 15:30 +0100
                SOLVED FOR GENE:Re: was: Re: tzdata-legacy [was: Re: systemd and  timezone] gene heskett <gheskett@shentel.net> - 2024-01-06 20:10 +0100
                Re: SOLVED FOR GENE:Re: was: Re: tzdata-legacy [was: Re: systemd  and timezone] John Hasler <john@sugarbit.com> - 2024-01-06 20:40 +0100
                Re: SOLVED FOR GENE:Re: was: Re: tzdata-legacy [was: Re: systemdand  timezone] gene heskett <gheskett@shentel.net> - 2024-01-06 21:40 +0100
                Re: SOLVED FOR GENE:Re: was: Re: tzdata-legacy [was: Re: systemdand  timezone] Nate Bargmann <n0nb@n0nb.us> - 2024-01-06 23:10 +0100
                Re: SOLVED FOR GENE:Re: was: Re: tzdata-legacy [was: Re: systemdand  timezone] Greg Wooledge <greg@wooledge.org> - 2024-01-07 01:10 +0100
                Re: SOLVED FOR GENE:Re: was: Re: tzdata-legacy [was: Re:  systemdandtimezone] gene heskett <gheskett@shentel.net> - 2024-01-07 05:30 +0100
                Re: SOLVED FOR GENE:Re: was: Re: tzdata-legacy [was: Re:  systemdandtimezone] Nate Bargmann <n0nb@n0nb.us> - 2024-01-07 12:30 +0100
                Re: SOLVED FOR GENE Felix Miata <mrmazda@earthlink.net> - 2024-01-07 12:40 +0100
                Re: SOLVED FOR GENE jeremy ardley <jeremy.ardley@gmail.com> - 2024-01-07 13:10 +0100
                Re: SOLVED FOR GENE john doe <johndoe65534@mail.com> - 2024-01-07 13:40 +0100
                Re: SOLVED FOR GENE Michael Stone <mstone@debian.org> - 2024-01-11 14:30 +0100
                Re: SOLVED FOR GENE Felix Miata <mrmazda@earthlink.net> - 2024-01-11 18:10 +0100
                manpages package [WAS Re: SOLVED FOR GENE:Re: was: Re: tzdata-legacy  [was: Re: systemd and timezone] "Andrew M.A. Cater" <amacater@einval.com> - 2024-01-06 23:50 +0100
                Re: was: Re: tzdata-legacy [was: Re: systemd and timezone] Max Nikulin <manikulin@gmail.com> - 2024-01-06 18:10 +0100
                Re: was: Re: tzdata-legacy [was: Re: systemd and timezone] gene heskett <gheskett@shentel.net> - 2024-01-06 20:40 +0100
                systemd-timesyncd Max Nikulin <manikulin@gmail.com> - 2024-01-07 16:50 +0100
                Re: systemd-timesyncd John Hasler <john@sugarbit.com> - 2024-01-07 17:30 +0100
                Re: systemd-timesyncd gene heskett <gheskett@shentel.net> - 2024-01-07 21:20 +0100
                Re: systemd-timesyncd Charles Kroeger <mbone@gmx.co.uk> - 2024-01-08 06:50 +0100
                Re: systemd-timesyncd gene heskett <gheskett@shentel.net> - 2024-01-07 21:10 +0100
                Re: systemd-timesyncd "Andrew M.A. Cater" <amacater@einval.com> - 2024-01-07 22:00 +0100
                Re: systemd-timesyncd Charles Curley <charlescurley@charlescurley.com> - 2024-01-08 00:00 +0100
                Re: systemd-timesyncd Nicholas Geovanis <nickgeovanis@gmail.com> - 2024-01-08 01:40 +0100
                VAX emulation/simulation (was Re: systemd-timesyncd) The Wanderer <wanderer@fastmail.fm> - 2024-01-08 02:10 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) Bret Busby <bret@busby.net> - 2024-01-08 10:40 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) "Jeremy Nicoll" <jn.ml.dbi.73@letterboxes.org> - 2024-01-08 11:40 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) "Thomas Schmitt" <scdbackup@gmx.net> - 2024-01-08 13:20 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) Nicholas Geovanis <nickgeovanis@gmail.com> - 2024-01-09 01:00 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) "Thomas Schmitt" <scdbackup@gmx.net> - 2024-01-09 09:20 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) Bret Busby <bret@busby.net> - 2024-01-09 10:40 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) "Thomas Schmitt" <scdbackup@gmx.net> - 2024-01-09 11:20 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) Nicolas George <george@nsup.org> - 2024-01-09 11:40 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) gene heskett <gheskett@shentel.net> - 2024-01-09 12:30 +0100
                Re: VAX emulation/simulation (was Re: systemd-timesyncd) "Niall O'Reilly" <niall+lists@no8.be> - 2024-01-08 21:50 +0100
                Re: systemd-timesyncd gene heskett <gheskett@shentel.net> - 2024-01-08 16:00 +0100
                Re: systemd-timesyncd gene heskett <gheskett@shentel.net> - 2024-01-08 16:00 +0100
                Re: systemd-timesyncd Max Nikulin <manikulin@gmail.com> - 2024-01-08 04:40 +0100
                Re: systemd-timesyncd Curt <curty@free.fr> - 2024-01-08 18:00 +0100
                Re: systemd-timesyncd Max Nikulin <manikulin@gmail.com> - 2024-01-08 04:20 +0100
                Re: systemd-timesyncd Charles Curley <charlescurley@charlescurley.com> - 2024-01-08 05:10 +0100
                Re: systemd-timesyncd Mark Fletcher <mark27q1@gmail.com> - 2024-01-08 14:50 +0100
                mktime (was: Re: systemd and timezone) Max Nikulin <manikulin@gmail.com> - 2023-12-23 18:00 +0100
                Re: mktime (was: Re: systemd and timezone) Jeffrey Walton <noloader@gmail.com> - 2023-12-23 19:30 +0100
                Re: mktime Max Nikulin <manikulin@gmail.com> - 2023-12-24 03:40 +0100
                Re: mktime (was: Re: systemd and timezone) <tomas@tuxteam.de> - 2023-12-24 08:40 +0100
                Re: mktime Max Nikulin <manikulin@gmail.com> - 2023-12-28 03:40 +0100
                Re: systemd and timezone Max Nikulin <manikulin@gmail.com> - 2023-12-21 16:30 +0100
                Re: difference in seconds between two formatted dates ... Max Nikulin <manikulin@gmail.com> - 2023-12-22 03:20 +0100
                Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-22 08:00 +0100
                Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-21 05:40 +0100
                Re: difference in seconds between two formatted dates ... Max Nikulin <manikulin@gmail.com> - 2023-12-21 06:50 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-21 07:10 +0100
                Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-21 08:10 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-21 13:40 +0100
                Re: difference in seconds between two formatted dates ... Max Nikulin <manikulin@gmail.com> - 2023-12-21 16:40 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-21 19:30 +0100
                Re: difference in seconds between two formatted dates ... gene heskett <gheskett@shentel.net> - 2023-12-21 21:00 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-21 21:10 +0100
                Re: difference in seconds between two formatted dates ... gene heskett <gheskett@shentel.net> - 2023-12-21 21:40 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-21 22:40 +0100
                Re: difference in seconds between two formatted dates ... gene heskett <gheskett@shentel.net> - 2023-12-22 00:40 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-25 16:40 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-25 18:40 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-26 08:00 +0100
                Re: difference in seconds between two formatted dates ... "Thomas Schmitt" <scdbackup@gmx.net> - 2023-12-26 08:30 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-26 16:00 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-26 16:40 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-26 19:40 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-26 22:40 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-27 01:40 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-27 01:50 +0100
                When strace breaks process or is blocked (was: Re: difference in  seconds between two formatted dates ...) Max Nikulin <manikulin@gmail.com> - 2023-12-27 17:50 +0100
            Re: difference in seconds between two formatted dates ... Max Nikulin <manikulin@gmail.com> - 2023-12-18 03:30 +0100
              Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-25 00:10 +0100
                Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-25 01:10 +0100
                Re: difference in seconds between two formatted dates ... Albretch Mueller <lbrtchx@gmail.com> - 2023-12-25 01:30 +0100
                Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-25 02:20 +0100
                Re: difference in seconds between two formatted dates ... "Andrew M.A. Cater" <amacater@einval.com> - 2023-12-25 11:40 +0100
                Re: difference in seconds between two formatted dates ... Tixy <tixy@yxit.co.uk> - 2023-12-25 09:10 +0100
                Re: difference in seconds between two formatted dates ... Andy Smith <andy@strugglers.net> - 2023-12-27 00:00 +0100
        Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-17 19:00 +0100
        Re: difference in seconds between two formatted dates ... David Wright <deblis@lionunicorn.co.uk> - 2023-12-17 19:30 +0100
    Re: difference in seconds between two formatted dates ... Teemu Likonen <tlikonen@iki.fi> - 2023-12-17 12:50 +0100
  Re: difference in seconds between two formatted dates ... <tomas@tuxteam.de> - 2023-12-17 12:10 +0100
  Re: difference in seconds between two formatted dates ... Greg Wooledge <greg@wooledge.org> - 2023-12-17 15:10 +0100

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