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Re: differences between hwclock <-> date due to time zone issues? ...

From Andy Smith <andy@strugglers.net>
Newsgroups linux.debian.user
Subject Re: differences between hwclock <-> date due to time zone issues? ...
Date 2023-03-24 15:50 +0100
Message-ID <GcQTT-eMAm-3@gated-at.bofh.it> (permalink)
References <GcAYN-eBEG-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Hello,

On Thu, Mar 23, 2023 at 09:41:40PM +0000, Albretch Mueller wrote:
>  I am using this (yes, visually cr@ppy ;-)) code snippet to set back
> the time 5 hours. hwclock tells me it worked fine but the terminal
> windows opened before and after running hwclock still give me the
> "old" time setting?

As already pointed out, the hardware clock is used in very limited
ways and is not the same thing as the system clock, so your result
is as expected.

What are you actually trying to do?

What "time zone issues" do you refer to?

It is very rare to need to modify the hardware clock. Typically it's
only done at shutdown time by the base OS to save the system clock
to the hardware clock ready for next boot, as the system clock is
assumed to be more accurate.

Cheers,
Andy

-- 
https://bitfolk.com/ -- No-nonsense VPS hosting

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Thread

differences between hwclock <-> date due to time zone issues? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-03-23 22:50 +0100
  Re: differences between hwclock <-> date due to time zone issues? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2023-03-23 23:10 +0100
  Re: differences between hwclock <-> date due to time zone issues? ... Cindy Sue Causey <butterflybytes@gmail.com> - 2023-03-23 23:10 +0100
    Re: differences between hwclock <-> date due to time zone issues? ... Cindy Sue Causey <butterflybytes@gmail.com> - 2023-03-23 23:30 +0100
  Re: differences between hwclock <-> date due to time zone issues? ... David Wright <deblis@lionunicorn.co.uk> - 2023-03-23 23:50 +0100
  Re: differences between hwclock <-> date due to time zone issues? ... Andy Smith <andy@strugglers.net> - 2023-03-24 15:50 +0100
    Re: differences between hwclock <-> date due to time zone issues? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-03-24 18:20 +0100
      Re: differences between hwclock <-> date due to time zone issues? ... Greg Wooledge <greg@wooledge.org> - 2023-03-24 22:50 +0100
        Re: differences between hwclock <-> date due to time zone issues? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2023-03-24 23:00 +0100
          Re: differences between hwclock <-> date due to time zone issues? ... Greg Wooledge <greg@wooledge.org> - 2023-03-24 23:10 +0100
            Re: differences between hwclock <-> date due to time zone issues? ... Stefan Monnier <monnier@iro.umontreal.ca> - 2023-03-25 00:20 +0100
              Re: differences between hwclock <-> date due to time zone issues? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-03-25 01:10 +0100
                Re: differences between hwclock <-> date due to time zone issues? ... Max Nikulin <manikulin@gmail.com> - 2023-03-25 04:20 +0100
                Re: differences between hwclock <-> date due to time zone issues? ... Albretch Mueller <lbrtchx@gmail.com> - 2023-03-25 04:50 +0100
                Re: differences between hwclock <-> date due to time zone issues? ... Max Nikulin <manikulin@gmail.com> - 2023-03-25 06:00 +0100
                Re: differences between hwclock <-> date due to time zone issues? ... Max Nikulin <manikulin@gmail.com> - 2023-03-25 09:00 +0100
              Re: differences between hwclock <-> date due to time zone issues? ... David Wright <deblis@lionunicorn.co.uk> - 2023-03-25 05:30 +0100
      Re: differences between hwclock <-> date due to time zone issues? ... David Wright <deblis@lionunicorn.co.uk> - 2023-03-25 05:30 +0100
        Re: differences between hwclock <-> date due to time zone issues? ... Felix Miata <mrmazda@earthlink.net> - 2023-03-25 05:50 +0100

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