[conspire] Calculating iCal dates

[Bill Lazar]

Wow, thanks for the explanation. This was a great example of teaching  
a person to fish!

Bill

On Jul 30, 2009, at 5:27 PM, Tony Godshall wrote:

>>> BEGIN:VEVENT
>>> UID:20090805T020000Z-58d96332c8cd1797ff3ec39c35f8ac63 at lugod.org
>>> DTSTART:20090805T020000Z
>>> DTEND:20090805T040000Z
>>> SUMMARY:LUGOD social gathering. -- http://www.lugod.org/meeting/
>>> END:VEVENT
>>
>> So this event begins at 2 a.m. and ends at 4 a.m.? It's mainly this  
>> part of
>> the timestamp which is causing me problems:
>
> Z = zulu time?
>
> We are at GMT-8 most of the year and, what, GMT-7 in the summer?
>
> 2+24-8=18 = 6PM Pacific Std
> 2+24-7=18 = 7PM Pacific Std
>
> Google Calendar shows it as 7-9 pm, so I think that's it.
>
> Oh, and it's Aug 4, not Aug 5!  Since we crossed midnight!
>
> Then again, I could actually bother to read the spec.
>
>> BEGIN:VEVENT
>> ...
>> DTSTART;TZID=US/Pacific:20090811T013000Z
>> DTEND;TZID=US/Pacific:20090811T040000Z
>> ...
>> END:VEVENT
>>
>> Same result if I leave out the timezone part. The event is supposed  
>> to be
>> from 6:30 - 9:00 p.m.
>
> 0130 GMT would thus be 1830 Pacific (GMT-7).  0130-0700 is 1830 the  
> prior day
>
> Tony
>
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