Re: VTIMEZONE and signular TZID

[Doug Royer <Doug.Royer@xxxxxxxxxxxx>]

David Madeo wrote:
> 
> Doug Royer wrote:
> 
> > I am getting back to the IANA timezone data and converting
> > the Olsen database into iCalendar format. I discovered
> > that there can be more than one name for the 'same' time zone.
> 
> I'd suggest asking the olsen mailing list why they have so many names for
> the same timezone.  I suspect it's because of cultural and political
> sensitivities.

I don't think they care about the name. They care if the data is
accurate. So if there were 100 names for the same timezone, and
they got them all - I think they would be happy.

Fortunately it looks like there is only 2 or 3 max overlap for
one time zone entry. They call then 'links'.

I have attached 'links' with the 111 aliases.

> Perhaps this needs to be a numerically indexed (so as to not offend) while
> allowing whatever descriptive tag you'd like (with a default of course).
> This also has the benefit of allowing i18n.

We would have to change iCalendar - as it uses TZID as the unique ID.
It is a text value, we could put a numeric value in text as the
value. But then we would have to invent a new property for the name.
We could in COMMENT or something - then we would have to update
the iTIP restriction tables to allow comment in a VTIMEZONE.

The TZID value is by default UTF-8. So it is already i18n ready.

-Doug

Antarctica/McMurdo	Antarctica/South_Pole
America/Adak	America/Atka
America/Tijuana	America/Ensenada
America/Indianapolis	America/Fort_Wayne
America/Indiana/Knox	America/Knox_IN
America/St_Thomas	America/Virgin
Asia/Jerusalem	Asia/Tel_Aviv
Asia/Ulaanbaatar	Asia/Ulan_Bator
Australia/Sydney	Australia/ACT
Australia/Sydney	Australia/Canberra
Australia/Lord_Howe	Australia/LHI
Australia/Sydney	Australia/NSW
Australia/Darwin	Australia/North
Australia/Brisbane	Australia/Queensland
Australia/Adelaide	Australia/South
Australia/Hobart	Australia/Tasmania
Australia/Melbourne	Australia/Victoria
Australia/Perth	Australia/West
Australia/Broken_Hill	Australia/Yancowinna
America/Porto_Acre	Brazil/Acre
America/Noronha	Brazil/DeNoronha
America/Sao_Paulo	Brazil/East
America/Manaus	Brazil/West
America/Halifax	Canada/Atlantic
America/Winnipeg	Canada/Central
America/Regina	Canada/East-Saskatchewan
America/Montreal	Canada/Eastern
America/Edmonton	Canada/Mountain
America/St_Johns	Canada/Newfoundland
America/Vancouver	Canada/Pacific
America/Regina	Canada/Saskatchewan
America/Whitehorse	Canada/Yukon
America/Santiago	Chile/Continental
Pacific/Easter	Chile/EasterIsland
America/Havana	Cuba
Africa/Cairo	Egypt
Europe/Dublin	Eire
Europe/London	GB
Europe/London	GB-Eire
Etc/GMT+0	GMT+0
Etc/GMT-0	GMT-0
Etc/GMT0	GMT0
Etc/Greenwich	Greenwich
Asia/Hong_Kong	Hongkong
Atlantic/Reykjavik	Iceland
Asia/Tehran	Iran
Asia/Jerusalem	Israel
America/Jamaica	Jamaica
Asia/Tokyo	Japan
Pacific/Kwajalein	Kwajalein
Africa/Tripoli	Libya
America/Tijuana	Mexico/BajaNorte
America/Mazatlan	Mexico/BajaSur
America/Mexico_City	Mexico/General
America/Denver	Navajo
Pacific/Auckland	NZ
Pacific/Chatham	NZ-CHAT
Pacific/Pago_Pago	Pacific/Samoa
Asia/Shanghai	PRC
Europe/Warsaw	Poland
Europe/Lisbon	Portugal
Asia/Taipei	ROC
Asia/Seoul	ROK
Asia/Singapore	Singapore
Europe/Istanbul	Turkey
Etc/UCT	UCT
America/Anchorage	US/Alaska
America/Adak	US/Aleutian
America/Phoenix	US/Arizona
America/Chicago	US/Central
America/Indianapolis	US/East-Indiana
America/New_York	US/Eastern
Pacific/Honolulu	US/Hawaii
America/Indiana/Knox	US/Indiana-Starke
America/Detroit	US/Michigan
America/Denver	US/Mountain
America/Los_Angeles	US/Pacific
Pacific/Pago_Pago	US/Samoa
Etc/UTC	UTC
Etc/Universal	Universal
Europe/Moscow	W-SU
Etc/Zulu	Zulu
Etc/GMT	GMT
Etc/UTC	Etc/Universal
Etc/UTC	Etc/Zulu
Etc/GMT	Etc/Greenwich
Etc/GMT	Etc/GMT-0
Etc/GMT	Etc/GMT+0
Etc/GMT	Etc/GMT0
Europe/Rome	Europe/Vatican
Europe/Rome	Europe/San_Marino
Europe/Oslo	Arctic/Longyearbyen
Europe/Prague	Europe/Bratislava
Europe/Istanbul	Asia/Istanbul
Europe/Belgrade	Europe/Ljubljana
Europe/Belgrade	Europe/Sarajevo
Europe/Belgrade	Europe/Skopje
Europe/Belgrade	Europe/Zagreb
America/Denver	America/Shiprock
America/Indianapolis	America/Indiana/Indianapolis
America/New_York	EST5EDT
America/Chicago	CST6CDT
America/Denver	MST7MDT
America/Los_Angeles	PST8PDT
America/Indianapolis	EST
America/Phoenix	MST
Pacific/Honolulu	HST
America/Los_Angeles	US/Pacific-New
Asia/Riyadh87	Mideast/Riyadh87
Asia/Riyadh88	Mideast/Riyadh88
Asia/Riyadh89	Mideast/Riyadh89