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Re: How to look up historical time zones by date and location

From Grant Edwards <invalid@invalid.invalid>
Newsgroups comp.lang.python
Subject Re: How to look up historical time zones by date and location
Date 2014-08-18 21:14 +0000
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <lstqar$pg5$2@reader1.panix.com> (permalink)
References (1 earlier) <85mwb24h9o.fsf@benfinney.id.au> <53F1875F.4020109@gmail.com> <CAPTjJmrxAox15ZKSNR5HtbFJSBukK7GwKH91itLid8cNE8Nvsg@mail.gmail.com> <53F1FBCC.6060406@gmail.com> <mailman.13107.1408384942.18130.python-list@python.org>

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On 2014-08-18, Ian Kelly <ian.g.kelly@gmail.com> wrote:

> By working with dates far enough in the past that the modern time zone
> rules don't apply. Some experimentation determines that the timedelta
> between Shanghai and Urumqi goes from 136 minutes to 120 minutes in
> 1928, and then from 120 minutes to 0 minutes in 1980.

Thanks to politicians who keep mucking about with such things as a way
to appear busy while still avoiding doing anything useful, it's no
small feat to handle current timezones correctly.  Expecting them to
work for dates/times from long ago is pretty much beyond the pale.

-- 
Grant

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Thread

Re: How to look up historical time zones by date and location Ian Kelly <ian.g.kelly@gmail.com> - 2014-08-18 11:53 -0600
  Re: How to look up historical time zones by date and location pecore@pascolo.net - 2014-08-18 21:47 +0200
  Re: How to look up historical time zones by date and location Grant Edwards <invalid@invalid.invalid> - 2014-08-18 21:14 +0000
    Re: How to look up historical time zones by date and location luofeiyu <elearn2014@gmail.com> - 2014-08-19 09:31 +0800
    Re: How to look up historical time zones by date and location luofeiyu <elearn2014@gmail.com> - 2014-08-19 09:00 +0800
    Re: How to look up historical time zones by date and location Ian Kelly <ian.g.kelly@gmail.com> - 2014-08-19 10:25 -0600
      Re: How to look up historical time zones by date and location Denis McMahon <denismfmcmahon@gmail.com> - 2014-08-19 17:44 +0000

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