[Zope] Incrementing with DateTime

[Tino Wildenhain]

Hi Colyn,

looks like the "day savings" as I think this is called.
This must happen twice a year were the clocks are rewind
and forward 1 hour in most regions.
And yes, this is always from saturday to sunday to avoid
further confusion :)


HTH
Tino Wildenhain

--On Dienstag, 22. Oktober 2002 15:28 -0700 Colyn Brown 
<colyn.brown@newtimes.com> wrote:

> I stumbled upon a strange occurrence when I incrementally add days
> using the DateTime function. For some reason, on Sunday October 27 (it
> has to be a Sunday) of any given year, when I try to add a day to it,
> it only adds 23 hours instead of 24...causing the day to still be the
> 27th (with 23 hours added). Here is printed loop to illustrate what
> I'm talking about:
>
> 2002/10/11 00:00:01 US/Mountain
> 2002/10/12 00:00:01 US/Mountain
> 2002/10/13 00:00:01 US/Mountain
> 2002/10/14 00:00:01 US/Mountain
> 2002/10/15 00:00:01 US/Mountain
> 2002/10/16 00:00:01 US/Mountain
> 2002/10/17 00:00:01 US/Mountain
> 2002/10/18 00:00:01 US/Mountain
> 2002/10/19 00:00:01 US/Mountain
> 2002/10/20 00:00:01 US/Mountain
> 2002/10/21 00:00:01 US/Mountain
> 2002/10/22 00:00:01 US/Mountain
> 2002/10/23 00:00:01 US/Mountain
> 2002/10/24 00:00:01 US/Mountain
> 2002/10/25 00:00:01 US/Mountain
> 2002/10/26 00:00:01 US/Mountain
> 2002/10/27 00:00:01 US/Mountain
> 2002/10/27 23:00:01 US/Mountain
> 2002/10/28 23:00:01 US/Mountain
> 2002/10/29 23:00:01 US/Mountain
> 2002/10/30 23:00:01 US/Mountain
> 2002/10/31 23:00:01 US/Mountain
>
> This seems to happen on the last Sunday in October of any year. Weird.
> Any input on this would help me out.
>
> --colyn
>
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