From: "Alan E. Davis" <firstname.lastname@example.org> To: Tim Cross <email@example.com> Cc: org-mode <firstname.lastname@example.org> Subject: Re: org-table change time from UTC to other timezones Date: Sat, 12 Dec 2020 19:14:32 -0800 [thread overview] Message-ID: <CAF-1L2SYAO10zu6uWSgU_M637cWaTD8Rfh88yFT8R-6TR0GaDw@mail.gmail.com> (raw) In-Reply-To: <email@example.com> [-- Attachment #1: Type: text/plain, Size: 1941 bytes --] Thank for the ideas. The 'date' command examples look interesting. I think R would not be too unwieldy as a hammer here. My use case is a humble one: just take a several clock times in HH:MM format (utc) and adjust to another timezone by adding or subtracting the relevant number of hours. The day of week is not important; i will have to deal with it. I did imagine a conditional subtraction by adding of subtracting 24:00 as needed. Much thanks for the advice. Alan On Sat, Dec 12, 2020, 15:00 Tim Cross <firstname.lastname@example.org> wrote: > > Maxim Nikulin <email@example.com> writes: > > > 2020-12-12 Alan E. Davis wrote: > >> > >> Thank for the clear explanation. My little problem seems to require a > >> super steam hammer. Your insights are most helpful. > > > > In my opinion, org mode is too rigid in respect to timestamp format. > > Sometimes I would prefer to specify timestamps with timezone. > > > > Well known example of idiosyncrasy of particular applications. > > Timestamps in xls files are represented by floating point numbers, > > namely days since 1 Jan 1900, fractional part is time. Unfortunately > > 1900 is not a leap year, so to avoid unnecessary complications of code > > and keep memory footprint small, on Macs epoch starts in 1904, on > > windows year 1900 has Feb, 29... > > Although there are likely some dark corners where bugs can be found, I > think you could probably add timezone data to org timestamps by changing > the default format strings. Org also uses an 'internal' 'time' value to > represent timestamps which are then converted to the required format > using these format strings. > > What is possibly missing is an easy way to specify a time zone when > creating a timestamp. I suspect it will default to whatever the local > system tz is and I don't think there is any convenient way to change tz > values like there is for the other timestamp components. > > -- > Tim Cross > > [-- Attachment #2: Type: text/html, Size: 2699 bytes --]
next prev parent reply other threads:[~2020-12-13 3:15 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-09 10:20 Alan E. Davis 2020-12-09 11:34 ` Tim Cross 2020-12-10 8:10 ` Alan E. Davis 2020-12-10 19:01 ` Tim Cross 2020-12-11 0:12 ` Alan E. Davis 2020-12-11 15:40 ` Maxim Nikulin 2020-12-11 22:44 ` Alan E. Davis 2020-12-12 16:04 ` Maxim Nikulin 2020-12-12 22:52 ` Tim Cross 2020-12-13 3:14 ` Alan E. Davis [this message] 2020-12-13 17:03 ` Maxim Nikulin 2020-12-14 2:29 ` Alan E. Davis 2020-12-12 3:31 ` Jean Louis
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