Standard (Olson ID) time zones codes:
| Value | Description | 
| MIT | (GMT-11:00) International Date Line W. | 
| Pacific/Apia | (GMT-11:00) Midway Island, Samoa | 
| Pacific/Honolulu | (GMT-10:00) Hawaii | 
| America/Anchorage | (GMT-09:00) Alaska | 
| America/Los_Angeles | (GMT-08:00) Pacific Time | 
| America/Denver | (GMT-07:00) Mountain Time | 
| America/Phoenix | (GMT-07:00) Arizona | 
| America/Chicago | (GMT-06:00) Central Time | 
| America/Costa_Rica | (GMT-06:00) Central America | 
| America/Mexico_City | (GMT-06:00) Mexico City | 
| America/Tegucigalpa | (GMT-06:00) La Paz | 
| America/Winnipeg | (GMT-06:00) Saskatchewan | 
| America/Bogota | (GMT-05:00) Bogota | 
| America/Indianapolis | (GMT-05:00) Indiana (East) | 
| America/Montreal | (GMT-05:00) Atlantic Time (Canada) | 
| America/New_York | (GMT-05:00) Eastern Time | 
| America/Caracas | (GMT-04:00) Caracas, La Paz | 
| America/Santiago | (GMT-04:00) Santiago | 
| America/Thule | (GMT-04:00) Greenland | 
| America/St_Johns | (GMT-03:30) Newfoundland | 
| America/Buenos_Aires | (GMT-03:00) Buenos Aires | 
| America/Sao_Paulo | (GMT-03:00) Brasilia | 
| Atlantic/South_Georgia | (GMT-02:00) Mid-Atlantic | 
| Atlantic/Azores | (GMT-01:00) Azores | 
| Atlantic/Cape_Verde | (GMT-01:00) Cape Verde Is. | 
| Africa/Casablanca | (GMT+00:00) Casablanca, Monrovia | 
| Europe/Dublin | (GMT+00:00) Greenwich Mean Time | 
| Africa/Lagos | (GMT+01:00) West Central Africa | 
| Europe/Amsterdam | (GMT+01:00) Amsterdam, Rome | 
| Europe/Belgrade | (GMT+01:00) Belgrade, Prague | 
| Europe/Brussels | (GMT+01:00) Brussels, Madrid | 
| Europe/Warsaw | (GMT+01:00) Sarajevo, Warsaw | 
| Africa/Cairo | (GMT+02:00) Cairo | 
| Africa/Harare | (GMT+02:00) Harare, Pretoria | 
| Asia/Jerusalem | (GMT+02:00) Jerusalem | 
| Europe/Athens | (GMT+02:00) Athens, Istanbul | 
| Europe/Bucharest | (GMT+02:00) Bucharest | 
| Europe/Helsinki | (GMT+02:00) Helsinki | 
| Africa/Nairobi | (GMT+03:00) Nairobi | 
| Asia/Baghdad | (GMT+03:00) Baghdad | 
| Asia/Kuwait | (GMT+03:00) Kuwait, Riyadh | 
| Europe/Moscow | (GMT+03:00) Moscow, St. Petersburg | 
| Asia/Tehran | (GMT+03:30) Tehran | 
| Asia/Baku | (GMT+04:00) Baku, Tbilisi | 
| Asia/Dubai | (GMT+04:00) Abu Dhabi | 
| Asia/Kabul | (GMT+04:30) Kabul | 
| Asia/Karachi | (GMT+05:00) Islamabad, Karachi | 
| Asia/Yekaterinburg | (GMT+05:00) Ekaterinburg | 
| Asia/Calcutta | (GMT+05:30) Chennai, Kolkata | 
| Asia/Katmandu | (GMT+05:45) Kathmandu | 
| Asia/Almaty | (GMT+06:00) Almaty | 
| Asia/Colombo | (GMT+06:00) Sri Jayawardenepura | 
| Asia/Dhaka | (GMT+06:00) Astana, Dhaka | 
| Asia/Rangoon | (GMT+06:30) Rangoon | 
| Asia/Bangkok | (GMT+07:00) Bangkok, Hanoi | 
| Asia/Krasnoyarsk | (GMT+07:00) Krasnoyarsk | 
| Asia/Hong_Kong | (GMT+08:00) Beijing, Hong Kong | 
| Asia/Irkutsk | (GMT+08:00) Irkutsk | 
| Asia/Kuala_Lumpur | (GMT+08:00) Kuala Lumpur, Singapore | 
| Asia/Taipei | (GMT+08:00) Taipei | 
| Australia/Perth | (GMT+08:00) Perth | 
| Asia/Seoul | (GMT+09:00) Seoul | 
| Asia/Tokyo | (GMT+09:00) Osaka, Tokyo | 
| Asia/Yakutsk | (GMT+09:00) Yakutsk | 
| Australia/Adelaide | (GMT+09:30) Adelaide | 
| Asia/Vladivostok | (GMT+10:00) Vladivostok | 
| Australia/Brisbane | (GMT+10:00) Brisbane | 
| Australia/Hobart | (GMT+10:00) Hobart | 
| Australia/Sydney | (GMT+10:00) Canberra, Sydney | 
| Pacific/Guam | (GMT+10:00) Guam | 
| Asia/Magadan | (GMT+11:00) Magadan, Solomon Is. | 
| Pacific/Auckland | (GMT+12:00) Auckland | 
| Pacific/Fiji | (GMT+12:00) Fiji, Kamchatka | 
| Pacific/Tongatapu | (GMT+13:00) Nuku'alofa |