pytz has so many timezones!
mensanator at aol.com
mensanator at aol.com
Tue Oct 9 13:31:38 EDT 2007
On Oct 9, 2:58 am, Dennis Lee Bieber <wlfr... at ix.netcom.com> wrote:
> On Mon, 08 Oct 2007 10:41:03 -0700, "mensana... at aol.com"
> <mensana... at aol.com> declaimed the following in comp.lang.python:
>
>
>
> > There are only 25 timezones: -12, -11, ... -1, 0 (GMT), +1, ... +11,
> > +12.
>
> Uhm... -12 and +12 would be the same, wouldn't they?
No, they are seperated by the International Date Line,
so although zones -12 & +12 have the same clock time, they
are different dates.
>
> There are only 24 divisions 15deg wide in longitude, 7.5deg to each
> size of zone center, and Greenwich is center of 0...
And zones -12 & +12 are each nominally 7.5deg wide,
so 23*15 + 2*7.5 gives you 25 zones spanning 360deg.
>
> However, consider that the former Soviet Union is reputed to have
> used only ONE timezone for the entire width of the country (sunrise at
> 6AM say in Moscow would be near sunset on the east coast)
When was this, in the days before air travel when it took
3 weeks to cross Siberia by train?
>
> So while there are only 24 hourly offsets, there can be many "zones"
> to reflect variations in daylight time changes or non-standard
> offsets...
The point I was trying to make is that although there may
be 400 zones, there aren't 400 offsets. And aren't these
offsets part of the timezone record?
> --
> Wulfraed Dennis Lee Bieber KD6MOG
> wlfr... at ix.netcom.com wulfr... at bestiaria.com
> HTTP://wlfraed.home.netcom.com/
> (Bestiaria Support Staff: web-a... at bestiaria.com)
> HTTP://www.bestiaria.com/
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