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Re: Searching for a "TimeInterval" type...

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Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> writes:
> Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> wrote:
>> Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> writes:
>>> Some example interval of what I'm going to deal with can be
>>> described as "tomorrow one (wall-clock)hour earlier". This just
>>> isn't the same as in "23 hours" (nor as "82800 seconds").
>> What will that be when called between midnight and 01:00?

> It would be the same day between 23:00 and midnight, even if the
> day itself is a DST-switch-day.

In that case it isn't tomorrow, so "tomorrow one (wall-clock)hour
earlier" is a bit misleading 1 hour in every 24. That is over 4% of
time.

> The other question: what that would be "one day minus one hour" after
> a timestamp between 3am and 4am of the saturday before Spring DST day?
> Answer: I don't care. That would be a weekend, and I happen not to care
> about weekends for my task ;-)

Logically it would probably skip one hour in Spring and use one hour
twice in Fall, when called near the time of the change. And the other
way round when the result would be near the time of the change. 
(Or is it the other way round..)
And apparently this doesn't matter. 

-- 
Jukka Lahtinen

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Searching for a "TimeInterval" type... Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-01 17:29 +0000
  Re: Searching for a "TimeInterval" type... markspace <markspace@nospam.nospam> - 2013-10-01 11:11 -0700
    Re: Searching for a "TimeInterval" type... markspace <markspace@nospam.nospam> - 2013-10-01 11:22 -0700
      Re: Searching for a "TimeInterval" type... Arne Vajhøj <arne@vajhoej.dk> - 2013-10-01 19:51 -0400
      Re: Searching for a "TimeInterval" type... Sebastian <news@seyweiler.dyndns.org> - 2013-10-02 09:23 +0200
        Re: Searching for a "TimeInterval" type... Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-02 14:42 +0000
          Re: Searching for a "TimeInterval" type... Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-10-03 07:57 +0200
            Re: Searching for a "TimeInterval" type... Arne Vajhøj <arne@vajhoej.dk> - 2013-10-03 20:44 -0400
              Re: Searching for a "TimeInterval" type... Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2013-10-05 04:22 +0200
          Re: Searching for a "TimeInterval" type... Sebastian <news@seyweiler.dyndns.org> - 2013-10-16 19:43 +0200
  Re: Searching for a "TimeInterval" type... Marcel Müller <news.5.maazl@spamgourmet.org> - 2013-10-01 21:54 +0200
    Re: Searching for a "TimeInterval" type... Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-02 15:02 +0000
  Re: Searching for a "TimeInterval" type... Silvio <silvio@internet.com> - 2013-10-01 22:04 +0200
  Re: Searching for a "TimeInterval" type... Arne Vajhøj <arne@vajhoej.dk> - 2013-10-01 19:53 -0400
    Re: Searching for a "TimeInterval" type... Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-02 15:12 +0000
      Re: Searching for a "TimeInterval" type... Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-10-02 23:25 +0300
        Re: Searching for a "TimeInterval" type... Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-02 23:56 +0000
          Re: Searching for a "TimeInterval" type... Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-10-03 17:18 +0300
            Re: Searching for a "TimeInterval" type... Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-03 18:54 +0000
              Re: Searching for a "TimeInterval" type... Jukka Lahtinen <jtfjdehf@hotmail.com.invalid> - 2013-10-03 23:53 +0300
      Re: Searching for a "TimeInterval" type... Silvio <silvio@internet.com> - 2013-10-02 23:03 +0200
        Re: Searching for a "TimeInterval" type... Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-03 00:04 +0000
      Re: Searching for a "TimeInterval" type... Arne Vajhøj <arne@vajhoej.dk> - 2013-10-02 21:36 -0400
        Re: Searching for a "TimeInterval" type... Arne Vajhøj <arne@vajhoej.dk> - 2013-10-03 21:41 -0400
          Re: Searching for a "TimeInterval" type... Andreas Leitgeb <avl@gamma.logic.tuwien.ac.at> - 2013-10-04 09:17 +0000
            Re: Searching for a "TimeInterval" type... Arne Vajhøj <arne@vajhoej.dk> - 2013-10-04 20:52 -0400

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