Groups > comp.os.linux.advocacy > #671707

Re: Does Dimdows Know What Time It Is?

From	DFS <nospam@dfs.com>
Newsgroups	comp.os.linux.advocacy
Subject	Re: Does Dimdows Know What Time It Is?
Date	2024-09-29 14:59 -0400
Organization	A noiseless patient Spider
Message-ID	<vdc82s$1rmvl$1@dont-email.me> (permalink)
References	<vda0ko$1e457$1@dont-email.me>

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On 9/28/2024 6:40 PM, Lawrence D'Oliveiro wrote:
> Something Unix did that was different from most other OSes was, its system
> clock kept time in UTC (or GMT, in pre-UTC days). Linux does the same.
> When you use a command like “date” to see what the current date and time
> is, it converts that UTC time to a local time in some specified timezone.
> Changing the timezone is as easy as specifying a new value for the TZ
> environment variable.
> 
> Windows, on the other hand, keeps its system clock in local time, in some
> specific time zone that is assumed to apply systemwide.
> 
> This is a particularly dumb idea when you realize how much it complicates
> things if your time zone has daylight saving time. We have seen this sort
> of thing happen on Windows systems before, where they might forget to
> adjust the clock to start/stop daylight saving, or even adjust it twice so
> you end up being an hour off in the opposite direction.
> 
> This can’t happen on Linux systems, because there is no turning daylight
> saving “on” or “off” as such: there is simply a table of local time
> offsets (from the “tzdata” files), and the correct offset to apply depends
> only on the actual UTC time value, not on the current setting of any
> system flag.
> 
> This also makes it easy to convert between UTC and local times at any time
> in the past, for any time zone.


I NEVER trust Linux to keep time.  I've encountered several occurrences 
of it dropping 5-7 minutes over a 1-hour period.


* user error
* Linux is just the kernel
* RTFM newb
* Linux is perfect
* you're lying
* works for me
* you have the source code, fix it yourself

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Does Dimdows Know What Time It Is? Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-09-28 22:40 +0000
  Re: Does Dimdows Know What Time It Is? vallor <vallor@cultnix.org> - 2024-09-28 23:21 +0000
    Re: Does Dimdows Know What Time It Is? Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-09-28 23:59 +0000
  Re: Does Dimdows Know What Time It Is? DFS <nospam@dfs.com> - 2024-09-29 14:59 -0400
    Re: Does Dimdows Know What Time It Is? Stéphane CARPENTIER <sc@fiat-linux.fr> - 2024-09-29 20:04 +0000
    Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-09-29 20:44 -0400
      Re: Does Dimdows Know What Time It Is? RonB <ronb02NOSPAM@gmail.com> - 2024-09-30 06:34 +0000
        Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-09-30 10:05 -0400
          Re: Does Dimdows Know What Time It Is? RonB <ronb02NOSPAM@gmail.com> - 2024-10-01 05:19 +0000
            Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-10-01 08:58 -0400
              Re: Does Dimdows Know What Time It Is? rbowman <bowman@montana.com> - 2024-10-01 18:30 +0000
                Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-10-01 21:08 -0400
              Re: Does Dimdows Know What Time It Is? Farley Flud <ff@linux.rocks> - 2024-10-01 18:51 +0000
                Re: Does Dimdows Know What Time It Is? DFS <nospam@dfs.com> - 2024-10-01 16:40 -0400
                Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-10-01 21:10 -0400
                Re: Does Dimdows Know What Time It Is? RonB <ronb02NOSPAM@gmail.com> - 2024-10-02 12:23 +0000
                Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-10-02 08:45 -0400
                Re: Does Dimdows Know What Time It Is? RonB <ronb02NOSPAM@gmail.com> - 2024-10-02 13:12 +0000
                Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-10-02 09:19 -0400
              Re: Does Dimdows Know What Time It Is? RonB <ronb02NOSPAM@gmail.com> - 2024-10-02 12:19 +0000
                Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-10-02 08:50 -0400
                Re: Does Dimdows Know What Time It Is? RonB <ronb02NOSPAM@gmail.com> - 2024-10-02 13:09 +0000
                Re: Does Dimdows Know What Time It Is? CrudeSausage <crude@sausa.ge> - 2024-10-02 09:20 -0400
          Re: Does Dimdows Know What Time It Is? Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-10-02 02:59 +0000
    Re: Does Dimdows Know What Time It Is? Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-09-30 01:24 +0000
      Re: Does Dimdows Know What Time It Is? candycanearter07 <candycanearter07@candycanearter07.nomail.afraid> - 2024-09-30 19:40 +0000
    Re: Does Dimdows Know What Time It Is? Chris Ahlstrom <OFeem1987@teleworm.us> - 2024-09-30 06:59 -0400
      Re: Does Dimdows Know What Time It Is? chrisv <chrisv@nospam.invalid> - 2024-10-01 07:07 -0500
        Re: Does Dimdows Know What Time It Is? DFS <nospam@dfs.com> - 2024-10-02 10:29 -0400
    Re: Does Dimdows Know What Time It Is? Joel <joelcrump@gmail.com> - 2024-10-01 08:26 -0400
      Re: Does Dimdows Know What Time It Is? rbowman <bowman@montana.com> - 2024-10-01 18:31 +0000
        Re: Does Dimdows Know What Time It Is? Joel <joelcrump@gmail.com> - 2024-10-01 18:05 -0400
        Re: Does Dimdows Know What Time It Is? Lawrence D'Oliveiro <ldo@nz.invalid> - 2024-10-02 02:59 +0000
          Re: Does Dimdows Know What Time It Is? Joel <joelcrump@gmail.com> - 2024-10-01 23:01 -0400
            Re: Does Dimdows Know What Time It Is? rbowman <bowman@montana.com> - 2024-10-02 03:51 +0000
          Re: Does Dimdows Know What Time It Is? DFS <nospam@dfs.com> - 2024-10-02 00:07 -0400
            Re: Does Dimdows Know What Time It Is? vallor <vallor@cultnix.org> - 2024-10-02 04:49 +0000

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