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From: <tomas@tuxteam.de>
To: emacs-orgmode@gnu.org
Subject: Re: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda
Date: Sat, 14 Jan 2023 15:48:05 +0100	[thread overview]
Message-ID: <Y8LApQZJKm08AiIW@tuxteam.de> (raw)
In-Reply-To: <87edrxyyeq.fsf@localhost>

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On Sat, Jan 14, 2023 at 02:38:05PM +0000, Ihor Radchenko wrote:

[...]

> > Or to put it in another way - currently, it is well understood where org
> > timestamps fall down. However, once you add TZ and provide the
> > expectation TZ data will be respected correctly, all bets are off.
> 
> I think I need to clarify.
> Emacs currently relies on glibc time zone support on Linux.
> I am not sure if glibc is 100% accurate, but it should be good enough.
> At least, there is no way we can do better ourselves.

TBH, this is the only way which makes sense. The OS keeps the Olson
database up to date and all applications rely on that. Anything else
would be madness.

Now there's still enough work for the applications to do: presentation,
parsing, disambiguation, if necessary asking the user for help. Someone
mentioned PostgreSQL -- this is a nice example of what can be done beyond
the (comparatively!) boring details of time zone management :-)

Cheers
-- 
t

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  reply	other threads:[~2023-01-14 14:49 UTC|newest]

Thread overview: 330+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-13  8:56 [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda Daryl Manning
2023-01-13 12:51 ` Tim Cross
2023-01-14  6:27   ` Daryl Manning
2023-01-14 12:46     ` Jean Louis
2023-01-14 11:18   ` Ihor Radchenko
2023-01-14 11:26     ` Daryl Manning
2023-01-14 11:42       ` Ihor Radchenko
2023-01-15  5:11         ` Max Nikulin
2023-01-15 13:41           ` Ihor Radchenko
2023-01-16 16:43             ` Max Nikulin
2023-01-16 18:37               ` Ihor Radchenko
2023-01-17 17:40                 ` Max Nikulin
2023-01-18  9:59                   ` Ihor Radchenko
2023-01-18 16:25                     ` Jean Louis
2023-01-18 16:24                   ` [SOLUTION] " Jean Louis
2023-01-20 10:57         ` Ihor Radchenko
2023-01-20 11:29           ` Daryl Manning
2023-01-20 11:36             ` Ihor Radchenko
2023-01-20 15:10               ` Daryl Manning
2023-01-20 11:39             ` Fraga, Eric
2023-01-20 11:48               ` Ihor Radchenko
2023-01-21 12:55                 ` Jean Louis
2023-01-21 13:41                   ` Ihor Radchenko
2023-01-21  9:21               ` Ihor Radchenko
2023-01-21 10:14                 ` Max Nikulin
2023-01-22 11:49                   ` Ihor Radchenko
2023-01-20 22:51             ` Tim Cross
2023-01-14 13:03     ` Tim Cross
2023-01-14 13:22       ` Ihor Radchenko
2023-01-15 19:10         ` Jean Louis
2023-01-16 11:21           ` Ihor Radchenko
2023-01-16 11:30             ` Daryl Manning
2023-01-16 11:39               ` Ihor Radchenko
2023-01-16 15:43                 ` Daryl Manning
2023-01-16 19:07                   ` Ihor Radchenko
2023-01-16 19:22                     ` Robert Horn
2023-01-16 19:41                       ` Ihor Radchenko
2023-01-16 20:47                         ` Robert Horn
2023-01-16 21:02                           ` Tom Gillespie
2023-01-16 21:48                             ` Robert Horn
2023-01-17  8:53                               ` Ihor Radchenko
2023-01-17  3:55                           ` Daryl Manning
2023-01-17  8:22                             ` Tim Cross
2023-01-17  9:15                               ` Ihor Radchenko
2023-01-17  9:45                                 ` Tim Cross
2023-01-18  9:15                                   ` Ihor Radchenko
2023-01-18 11:43                                     ` Tim Cross
2023-01-18 12:02                                       ` Ihor Radchenko
2023-01-18 21:16                                         ` Tim Cross
2023-01-19  5:29                                           ` Jean Louis
2023-01-19  6:25                                             ` Thomas S. Dye
2023-01-19 14:17                                               ` Jean Louis
2023-01-19 15:55                                                 ` Thomas S. Dye
2023-01-21 13:10                                                   ` Jean Louis
2023-01-21 16:23                                                     ` Thomas S. Dye
2023-01-21 13:50                                                   ` Jean Louis
2023-01-21 14:31                                                     ` Max Nikulin
2023-01-21 16:55                                                     ` Thomas S. Dye
2023-01-19  7:23                                             ` Tim Cross
2023-01-19 14:32                                               ` Jean Louis
2023-01-19 20:09                                                 ` Tim Cross
2023-01-19 23:02                                                   ` Thomas S. Dye
2023-01-19 23:51                                                     ` Tim Cross
2023-01-20  0:24                                                       ` Thomas S. Dye
2023-01-20  3:46                                                         ` Tim Cross
2023-01-20  6:14                                                           ` Thomas S. Dye
2023-01-27  6:06                                                             ` Sterling Hooten
2023-01-27  6:09                                                               ` Daryl Manning
2023-01-27  9:54                                                               ` Jean Louis
2023-01-27 21:04                                                                 ` Tim Cross
2023-01-29  4:09                                                                   ` Jean Louis
2023-01-29  6:21                                                                     ` Thomas S. Dye
2023-01-29  6:46                                                                       ` Daryl Manning
2023-01-29 14:10                                                                         ` Ihor Radchenko
2023-01-30 19:37                                                                       ` Jean Louis
2023-01-31  0:53                                                                         ` Thomas S. Dye
     [not found]                                                                         ` <0597910b-9b01-3c0c-5d06-da171e0de4cd@gmx.at>
2023-01-31  6:08                                                                           ` Jean Louis
2023-01-29  6:31                                                                     ` Max Nikulin
2023-01-30 20:36                                                                       ` Jean Louis
2023-01-30 20:38                                                                       ` Jean Louis
2023-01-29 20:26                                                                     ` Tim Cross
2023-01-30 20:55                                                                       ` Jean Louis
2023-01-30 21:54                                                                         ` Tim Cross
2023-01-31  7:04                                                                           ` Jean Louis
2023-01-31  8:14                                                                             ` Max Nikulin
2023-01-31 13:02                                                                               ` Jean Louis
2023-01-27 11:09                                                               ` Ihor Radchenko
2023-01-27 12:49                                                                 ` Sterling Hooten
2023-01-27 13:00                                                                   ` Ihor Radchenko
2023-01-27 15:03                                                                   ` Jean Louis
2023-01-30 13:08                                                                   ` Ihor Radchenko
2023-01-27 20:58                                                                 ` Tim Cross
2023-01-30 11:25                                                                 ` Greg Minshall
2023-01-31 11:48                                                                   ` [POLL] Proposed syntax for timestamps with time zone info (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Ihor Radchenko
2023-01-31 12:19                                                                     ` Daryl Manning
2023-01-31 12:41                                                                       ` Ihor Radchenko
     [not found]                                                                         ` <CAL9aZksf8AGF=dXg0KAtLPyu1ATt1fLpvdsjN6GMCuK2KRQ56w@mail.gmail.com>
2023-01-31 13:33                                                                           ` Ihor Radchenko
2023-01-31 13:22                                                                     ` Jean Louis
2023-01-31 13:46                                                                       ` Ihor Radchenko
2023-01-31 19:59                                                                         ` Jean Louis
2023-02-01 12:42                                                                           ` Ihor Radchenko
2023-02-01 15:28                                                                             ` Jean Louis
2023-02-01 16:30                                                                               ` Ihor Radchenko
2023-01-31 20:12                                                                         ` Jean Louis
2023-02-01  5:46                                                                           ` tomas
2023-02-01  7:29                                                                             ` Jean Louis
2023-02-01  7:52                                                                             ` Tim Cross
2023-02-01  8:32                                                                               ` Jean Louis
2023-02-01  8:46                                                                               ` Ihor Radchenko
2023-02-01  9:38                                                                                 ` Tim Cross
2023-02-01 10:15                                                                                   ` Ihor Radchenko
2023-02-01 14:53                                                                                     ` Jean Louis
2023-02-01 16:36                                                                                       ` Ihor Radchenko
2023-02-01 10:46                                                                                   ` Max Nikulin
2023-02-01 14:43                                                                                   ` Jean Louis
2023-02-01 16:45                                                                                     ` Ihor Radchenko
2023-02-02  3:05                                                                                       ` Max Nikulin
2023-02-02  8:59                                                                                         ` Ihor Radchenko
2023-02-01  9:40                                                                                 ` [POLL] Proposed syntax for timestamps with time zone info Stefan Nobis
2023-02-01  9:45                                                                                   ` Ihor Radchenko
2023-02-01 14:38                                                                                 ` [POLL] Proposed syntax for timestamps with time zone info (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Jean Louis
2023-02-01 16:50                                                                                   ` Ihor Radchenko
2023-02-03 15:48                                                                                   ` [POLL] Proposed syntax for timestamps with time zone info Stefan Nobis
2023-02-04  5:07                                                                                     ` Jean Louis
2023-02-01  9:06                                                                             ` Stefan Nobis
2023-02-01  9:20                                                                               ` tomas
2023-02-01  9:48                                                                                 ` Stefan Nobis
2023-10-29  1:04                                                                                 ` Jean Louis
2023-02-06 15:34                                                                                   ` Marcin Borkowski
2023-02-06 17:03                                                                                     ` tomas
2023-02-07 21:08                                                                                     ` Jean Louis
2023-10-29  1:02                                                                               ` Jean Louis
2023-02-01  7:00                                                                           ` [POLL] Proposed syntax for timestamps with time zone info (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Thomas S. Dye
2023-02-01  7:41                                                                             ` Jean Louis
2023-01-31 17:56                                                                     ` [POLL] Proposed syntax for timestamps with time zone info Fraga, Eric
2023-01-31 18:13                                                                       ` Ihor Radchenko
2023-01-31 18:22                                                                         ` Fraga, Eric
2023-01-31 18:56                                                                     ` [POLL] Proposed syntax for timestamps with time zone info (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Greg Minshall
2023-02-01 12:48                                                                       ` Ihor Radchenko
2023-02-01 12:52                                                                         ` tomas
2023-02-02  4:49                                                                           ` Greg Minshall
2023-01-31 20:41                                                                     ` Tim Cross
2023-01-31 23:50                                                                     ` Samuel Wales
2023-02-01 13:01                                                                       ` Ihor Radchenko
2023-02-04 22:33                                                                         ` Samuel Wales
2023-02-04 22:49                                                                           ` Samuel Wales
2023-02-05 10:38                                                                           ` Ihor Radchenko
2023-02-01 11:56                                                                     ` Christian Moe
2023-02-01 12:20                                                                       ` Ihor Radchenko
     [not found]                                                                         ` <87o7qdsf7h.fsf@christianmoe.com>
2023-02-01 13:26                                                                           ` POSIX TS spec reverses the meaning of TZ offset compared to ISO (was: [POLL] Proposed syntax for timestamps with time zone info (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda)) Ihor Radchenko
2023-02-01 13:51                                                                             ` tomas
2023-02-01 21:57                                                                               ` POSIX TS spec reverses the meaning of TZ offset compared to ISO (was: [POLL] Proposed syntax for timestamps with time zone info Heinz Tuechler
2023-02-01 22:50                                                                                 ` Samuel Wales
2023-02-02  9:01                                                                                   ` Ihor Radchenko
2023-02-02  3:22                                                                                 ` Max Nikulin
2023-02-02  7:45                                                                                   ` POSIX TS spec reverses the meaning of TZ offset compared to ISO Heinz Tuechler
2023-02-02  8:33                                                                                     ` tomas
2023-02-02  9:37                                                                                       ` Heinz Tuechler
2023-02-04 15:44                                                                                         ` Max Nikulin
2023-02-02  5:35                                                                                 ` POSIX TS spec reverses the meaning of TZ offset compared to ISO (was: [POLL] Proposed syntax for timestamps with time zone info tomas
2023-02-02  8:56                                                                                 ` Ihor Radchenko
2023-02-01 15:16                                                                             ` POSIX TS spec reverses the meaning of TZ offset compared to ISO (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Max Nikulin
2023-02-02  8:34                                                                               ` Ihor Radchenko
2023-02-02 13:59                                                                                 ` Max Nikulin
2023-02-02 14:06                                                                                   ` Ihor Radchenko
2023-02-01 15:41                                                                         ` [POLL] Proposed syntax for timestamps with time zone info " Jean Louis
2023-02-02  8:38                                                                           ` Ihor Radchenko
2023-02-03 11:31                                                                             ` Jean Louis
2023-02-04 10:58                                                                               ` Ihor Radchenko
2023-02-04 19:32                                                                                 ` Jean Louis
2023-02-05  9:14                                                                                   ` Ihor Radchenko
2023-02-02  3:46                                                                     ` Timothy
2023-02-02  9:12                                                                       ` Ihor Radchenko
2023-02-02  9:12                                                                         ` Timothy
2023-02-02  9:20                                                                           ` Ihor Radchenko
2023-02-02  9:27                                                                             ` Timothy
2023-02-02  9:38                                                                         ` [POLL] Proposed syntax for timestamps with time zone info Stefan Nobis
2023-01-30 12:30                                                               ` [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda Ihor Radchenko
2023-01-30 15:30                                                                 ` Greg Minshall
2023-01-30 15:38                                                                   ` Ihor Radchenko
2023-01-30 15:48                                                                     ` Greg Minshall
2023-01-20  4:03                                                   ` Max Nikulin
2023-01-20  5:39                                                     ` Tim Cross
2023-01-20  7:28                                                       ` Max Nikulin
2023-01-20  8:11                                                         ` Tim Cross
2023-01-20 15:29                                                           ` Max Nikulin
2023-01-20 22:56                                                             ` Tim Cross
2023-01-20  9:35                                                       ` Fraga, Eric
2023-01-20 10:48                                                       ` Ihor Radchenko
2023-01-20  6:46                                                     ` Thomas S. Dye
2023-01-20  7:34                                                       ` Max Nikulin
2023-01-20  8:17                                                       ` Tim Cross
2023-01-20 12:17                                                         ` Max Nikulin
2023-01-20 16:09                                                           ` Thomas S. Dye
2023-01-20 16:56                                                             ` Max Nikulin
2023-01-20 20:37                                                               ` Thomas S. Dye
2023-01-21  0:14                                                                 ` Tim Cross
2023-01-21  0:37                                                                   ` Thomas S. Dye
2023-01-21  5:53                                                                     ` Max Nikulin
2023-01-21 15:55                                                                       ` Thomas S. Dye
2023-01-22 12:14                                                                         ` Max Nikulin
2023-01-22 13:35                                                                           ` Thomas S. Dye
2023-01-22 14:09                                                                           ` Max Nikulin
2023-01-20 23:38                                                           ` Tim Cross
2023-01-21  6:21                                                             ` Max Nikulin
2023-01-21 21:29                                                               ` Tim Cross
2023-01-22  5:50                                                                 ` UTC or not UTC for timestamps in the past ([FEATURE REQUEST] Timezone support in org-mode) Max Nikulin
2023-01-22  6:17                                                                   ` Thomas S. Dye
2023-01-22  8:35                                                                     ` Max Nikulin
2023-01-22 16:54                                                                       ` Thomas S. Dye
2023-01-23  6:28                                                                         ` Jean Louis
2023-01-23 16:04                                                                           ` Thomas S. Dye
2023-01-24  2:34                                                                             ` Max Nikulin
2023-01-24  2:44                                                                               ` Thomas S. Dye
2023-01-24  4:48                                                                                 ` Max Nikulin
2023-01-24 19:18                                                                                   ` Jean Louis
2023-01-24  9:34                                                                             ` Ihor Radchenko
2023-01-24 16:41                                                                               ` Thomas S. Dye
2023-01-26 15:37                                                                             ` Max Nikulin
2023-01-26 16:31                                                                               ` Thomas S. Dye
2023-01-27 21:21                                                                                 ` Tim Cross
2023-01-22  7:48                                                                   ` Tim Cross
2023-01-24 17:09                                                                     ` Max Nikulin
2023-01-24 19:20                                                                       ` Jean Louis
2023-01-24 20:50                                                                       ` Tim Cross
2023-01-19 10:35                                           ` [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda Ihor Radchenko
2023-01-19 17:57                                           ` Alexander Adolf
2023-01-21 13:51                                             ` Jean Louis
2023-01-18 17:09                                   ` Max Nikulin
2023-01-17  8:45                           ` Ihor Radchenko
2023-01-19 16:56                             ` Robert Horn
2023-01-19 17:44                           ` Alexander Adolf
2023-01-19 17:48                           ` Alexander Adolf
2023-01-17 15:37                     ` Jean Louis
2023-01-18  9:29                       ` Ihor Radchenko
2023-01-18 16:11                         ` Jean Louis
2023-01-18 21:31                         ` Tim Cross
2023-01-19 10:40                           ` Ihor Radchenko
2023-01-17 17:28                     ` Max Nikulin
2023-01-17 19:49                       ` Ihor Radchenko
2023-01-18 16:21                         ` Jean Louis
2023-01-18 16:20                       ` Jean Louis
2023-01-20 16:27                         ` Max Nikulin
2023-01-19 17:33                   ` Alexander Adolf
2023-01-16 20:25               ` Tim Cross
2023-01-17  9:07                 ` Ihor Radchenko
2023-01-17 15:24             ` Jean Louis
2023-01-18  9:34               ` Ihor Radchenko
2023-01-18 16:07                 ` Jean Louis
2023-01-19 10:43                   ` Ihor Radchenko
2023-01-19 14:37                     ` Jean Louis
2023-01-15 20:43         ` Jean Louis
2023-01-16 11:25           ` Ihor Radchenko
2023-01-17 15:19             ` Jean Louis
2023-01-18  9:38               ` Ihor Radchenko
2023-01-16  5:01     ` Tom Gillespie
2023-01-16 12:31       ` Ihor Radchenko
2023-01-16 20:32         ` Tim Cross
2023-01-16 20:51           ` Tom Gillespie
2023-01-17  9:12             ` [FR] Allow BC years in timestamps (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Ihor Radchenko
2023-01-13 19:06 ` [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda Jean Louis
2023-01-14  7:12   ` Max Nikulin
2023-01-14  9:32     ` Tim Cross
2023-01-14 11:08       ` Russell Adams
2023-01-14 11:35         ` Ihor Radchenko
2023-01-14 12:00           ` Russell Adams
2023-01-14 12:16             ` [FR] Allow end date and max repeat count for timestamps with repeaters (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Ihor Radchenko
2023-01-15  1:09               ` Samuel Wales
2023-01-15 13:45                 ` Ihor Radchenko
2023-01-15 23:49                   ` Samuel Wales
2023-01-15 23:53                     ` Samuel Wales
2023-01-16 13:01                     ` Ihor Radchenko
2023-01-14 12:19             ` [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda Ihor Radchenko
2023-01-14 12:21               ` Russell Adams
2023-01-14 12:31                 ` Ihor Radchenko
2023-01-14 11:30       ` Ihor Radchenko
2023-01-14 14:09         ` Tim Cross
2023-01-14 14:38           ` Ihor Radchenko
2023-01-14 14:48             ` tomas [this message]
2023-01-14 15:05               ` Ihor Radchenko
2023-01-14 16:50                 ` tomas
2023-01-14 17:06                   ` Ihor Radchenko
2023-01-14 17:13                     ` tomas
2023-01-15 19:54                       ` Jean Louis
2023-01-14 21:52                     ` Tim Cross
2023-01-15 13:52                       ` Ihor Radchenko
2023-01-20 14:34                         ` Alexander Adolf
2023-01-15 20:03                       ` Jean Louis
2023-01-15 19:52                     ` Jean Louis
2023-01-16 13:11                       ` Ihor Radchenko
2023-01-14 20:56                   ` Tim Cross
2023-01-15 20:24                     ` Jean Louis
2023-01-15  4:37                 ` Max Nikulin
2023-01-15  5:03                 ` Max Nikulin
2023-01-15 20:28                   ` Jean Louis
2023-01-16 13:17                     ` Ihor Radchenko
2023-01-14 11:55       ` Max Nikulin
2023-01-14 13:50         ` Tim Cross
2023-01-14 16:50           ` Max Nikulin
2023-01-14 20:30             ` Tim Cross
2023-01-15  4:00               ` Max Nikulin
2023-01-15  7:53                 ` Tim Cross
2023-01-15 19:26                   ` Jean Louis
2023-01-16 13:20                     ` Ihor Radchenko
2023-01-15 14:00                 ` Ihor Radchenko
2023-01-14 13:08     ` Jean Louis
2023-01-14 16:58       ` Max Nikulin
2023-01-14 19:43         ` Tim Cross
2023-01-15  6:37           ` tomas
2023-01-15 14:07           ` Ihor Radchenko
2023-01-15 20:43             ` Tim Cross
2023-01-16  5:20               ` Tom Gillespie
2023-01-16 13:29                 ` Ihor Radchenko
2023-01-16 17:30                   ` Tom Gillespie
2023-01-16 17:53                     ` Ihor Radchenko
2023-01-16 13:27               ` Ihor Radchenko
2023-01-15 19:14           ` Jean Louis
2023-01-16  4:20             ` Max Nikulin
2023-01-15 19:12         ` Jean Louis
2023-01-14  5:14 ` Samuel Wales
2023-01-14  5:51   ` Tom Gillespie
2023-01-14  6:40     ` tomas
2023-01-26 15:24     ` Org mode timestamps on the Moon ;] (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Ihor Radchenko
2023-01-26 16:08       ` Org mode timestamps on the Moon ;] Fraga, Eric
2023-01-26 16:28         ` Thomas S. Dye
2023-01-26 23:40       ` Org mode timestamps on the Moon ;] (was: [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda) Tom Gillespie
2023-01-30 10:13         ` Org mode timestamps on the Moon ; ] " Greg Minshall
2023-01-30 13:05         ` Org mode timestamps on the Moon ;] " Ihor Radchenko
  -- strict thread matches above, loose matches on Subject: below --
2023-01-15 19:16 [FEATURE REQUEST] Timezone support in org-mode datestamps and org-agenda Thomas S. Dye
2023-01-28  6:26 Max Nikulin

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