Time Zone Hell

in another forum i was going to help someone with a problem converting between timezones. to make a long story short, TimeZoneInfo.GetSystemTimeZones() returns a list of 90, without abbreviations. Just so happened that the one I was looking for wasn't there, it was old. i found it eventually.

so far my list of timezones is about 300, with GMT offsets. here is a sample.

Code:

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COT        Colombia Time                (GMT-05:00)
CS        Central Summer Time        Australia        (GMT+10:30)
CST        Central Standard Time        Australia        (GMT+9:30)
CST        Central Standard Time        North America        (GMT-06:00)
CST        Central Summer Time        Australia        (GMT+10:30)
CST        China Standard Time                (GMT+08:00)
CVT        Cape Verde Time                (GMT-01:00)
CXT        Christmas Island Time        Australia        (GMT+07:00)
D        Delta Time Zone        Military        (GMT+04:00)
DAVT        Davis Time                (GMT+07:00)
DTAT        District de Terre Adélie Time                (GMT+10:00)

SBT        Solomon Island Time                (GMT+11:00)
SCDT        Santa Claus Delivery Time                (GMT+13:00)
SCST        Santa Claus Standard Time                (GMT+12:00)
SCT        Seychelles Time                (GMT+04:00)
SGT        Singapore Time                (GMT+08:00)
SIT        Spratly Islands Time                (GMT+08:00)
SLT        Sierra Leone Time                (GMT+00:00)
SRT        Suriname Time                (GMT-03:00)
SST        Samoa Standard Time                (GMT-11:00)
SST        Swedish Summer Time        Europe        (GMT+02:00)
SWT        Swedish Winter Time        Europe        (GMT+01:00)
SYST        Syrian Summer Time                (GMT+03:00)
SYT        Syrian Standard Time                (GMT+02:00)

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as you can see there are duplicate abbreviations.

does anyone else have a list?

A list of all timezones including duplicated ones?

the abbrev's are dup'ed, but the zone is different.