Re: RFC 2445 Q: is TZID broken?

[pregen@xxxxxxxxxxxxxxxxxx]

Mark, having different implementations is a hurdle to interoperability. 
This is one of the items that is being worked on during our interop 
testing.  I know there was some work going on about having one place/table 
to use for timezones.  The Olson table was suggested - although people 
have commented that it is not all-inclusive.  Mr. Olson said he was 
willing to share this table with the IETF world so there would be one 
common repository.  What he did not want to do was be responsible for 
communicating changes back and forth to the IETF.  he has another person, 
anyway, who manages this.  I brought it up to management at the IETF - and 
they said they were will to have someone "be responsible" for intereacting 
with the Olson table group.  I think it simply fell off of the radar scope 
for someone to follow up and continue this effort.  I keep hoping someone 
on this list is a zealot about timezones and would be willing to help 
"nudge" this along. 




Mark Swanson <mark@xxxxxxxxxxxxxxxxxxxxxxx>
Sent by: owner-ietf-calendar@xxxxxxxxxxxx
01/22/2003 13:48

 
        To:     ietf-calendar@xxxxxxx
        cc: 
        Subject:        RFC 2445 Q: is TZID broken?



Hello,

There seems to be an issue with time zones:
(from the spec)

                 "The specification of
        globally unique time zone identifiers is not addressed by this
        document and is left for future study."

Since I'm seeing various popular ICalendar implementations use their own 
formats, how can anything be expected to interoperate?

You obviously can not rely on GMT offset ("America/Phoenix" and 
"America/Denver" both have GMT-07:00, but differ in daylight savings 
behavior) so time zone identifiers are required.

Would a list of timezones for every available implementation be required? 
As 
well as a mapping between them all?

Anyone can see the time zones that ScheduleWorld uses by iterating through 
the 
available TimeZone.getAvailableIDs(). 

Thank you.

-- 
Schedule your world with ScheduleWorld.com
http://www.ScheduleWorld.com/
Java Web Start:
http://www.ScheduleWorld.com/sw/ScheduleWorld.jnlp