Time Datum
Not Available
United States Geological Survey, National Water Information System
| Code | Sort Order | UTC Offset | Name | Description |
|---|---|---|---|---|
| UTC | 1 | 00:00 | Universal Coordinated Time | Universal Coordinated Time |
| NST | 2 | -03:30 | Newfoundland Standard Time | Newfoundland |
| NDT | 2 | -02:30 | Newfoundland Daylight Time | Newfoundland |
| AST | 3 | -04:00 | Atlantic Standard Time (Canada) | Atlantic (Canada) |
| ADT | 3 | -03:00 | Atlantic Daylight Time | Atlantic (Canada) |
| EST | 4 | -05:00 | Eastern Standard Time | Eastern North America |
| EDT | 4 | -04:00 | Eastern Daylight Time | Eastern North America |
| CST | 5 | -06:00 | Central Standard Time | Central North America |
| CDT | 5 | -05:00 | Central Daylight Time | Central North America |
| MST | 6 | -07:00 | Mountain Standard Time | Mountain North America |
| MDT | 6 | -06:00 | Mountain Daylight Time | Mountain North America |
| PST | 7 | -08:00 | Pacific Standard Time | Pacific North America |
| PDT | 7 | -07:00 | Pacific Daylight Time | Pacific North America |
| AKST | 8 | -09:00 | Alaska Standard Time | Alaska |
| AKDT | 8 | -08:00 | Alaska Daylight Time | Alaska |
| HST | 9 | -10:00 | Hawaii Standard Time | Hawaii |
| HDT | 9 | -09:00 | Hawaii Daylight Time | Hawaii |
| ZP-11 | 10 | -11:00 | GMT -11 hours | GMT -11 hours |
| IDLW | 11 | -12:00 | International Date Line, West | International Date Line, West |
| IDLE | 12 | +12:00 | International Date Line, East | International Date Line, East |
| NZST | 13 | +12:00 | New Zealand Standard Time | New Zealand |
| NZDT | 13 | +13:00 | New Zealand Daylight Time | New Zealand |
| NZT | 14 | +12:00 | New Zealand Time | New Zealand |
| NZDT | 14 | +13:00 | New Zealand Daylight Time | New Zealand |
| ZP11 | 15 | +11:00 | GMT +11 hours | Zone GMT +11 Hours |
| AEST | 16 | +10:00 | Australia Eastern Standard Time | Eastern Australia |
| AESST | 16 | +11:00 | Australia Eastern Summer Time | Eastern Australia |
| EAST | 17 | +10:00 | East Australian Standard Time | East Australia |
| EASST | 17 | +11:00 | East Australian Summer Time | East Australia |
| GST | 18 | +10:00 | Guam Standard Time | Guam Standard Time, Russia Zone 9 |
| LIGT | 19 | +10:00 | Melbourne, Australia | Melbourne |
| ACST | 20 | +09:30 | Central Australia Standard Time | Central Australia |
| ACSST | 20 | +10:30 | Central Australia Summer Time | Central Australia |
| CAST | 21 | +09:30 | Central Australia Standard Time | Central Australia |
| CADT | 21 | +10:30 | Central Australia Daylight Time | Central Australia |
| SAT | 22 | +09:30 | South Australian Standard Time | South Australia |
| SADT | 22 | +10:30 | South Australian Daylight Time | South Australia |
| JST | 23 | +09:00 | Japan Standard Time | Japan Standard Time, Russia Zone 8 |
| KST | 24 | +09:00 | Korea Standard Time | Korea |
| MT | 25 | +08:30 | Moluccas Time | Moluccas |
| AWST | 26 | +08:00 | Australia Western Standard Time | Western Australia |
| AWSST | 26 | +09:00 | Australia Western Summer Time | Western Australia |
| CCT | 27 | +08:00 | China Coastal Time | China Coastal |
| WST | 28 | +08:00 | West Australian Standard Time | West Australian |
| WDT | 28 | +09:00 | West Australian Daylight Time | West Australian |
| JT | 29 | +07:30 | Java Time | Java |
| WAST | 30 | +07:00 | West Australian Standard Time | West Australia |
| WADT | 30 | +08:00 | West Australian Daylight Time | West Australia |
| ZP6 | 31 | +06:00 | GMT +6 hours | Zone GMT +6 Hours |
| ZP5 | 32 | +05:00 | GMT +5 hours | Zone GMT +5 Hours |
| ZP4 | 33 | +04:00 | GMT +4 hours | Zone GMT +4 Hours |
| IT | 34 | +03:30 | Iran Time | Iran |
| BT | 35 | +03:00 | Baghdad Time | Baghdad |
| EET | 36 | +02:00 | Eastern Europe Standard Time | Eastern Europe, Russia Zone 1 |
| EETDST | 36 | +03:00 | Eastern Europe Daylight Time | Eastern Europe, Russia Zone 1 |
| IST | 37 | +02:00 | Israel Standard Time | Israel |
| CET | 38 | +01:00 | Central European Time | Central Europe |
| CETDST | 38 | +02:00 | Central European Daylight Time | Central Europe |
| DNT | 39 | +01:00 | Dansk Normal Time | Dansk |
| DST | 40 | +01:00 | Dansk Standard Time (?) | Dansk |
| FST | 41 | +01:00 | French Summer Time | French |
| FWT | 41 | +02:00 | French Winter Time | French |
| MET | 42 | +01:00 | Middle Europe Time | Middle Europe |
| METDST | 42 | +02:00 | Middle Europe Daylight Time | Middle Europe |
| MEWT | 43 | +01:00 | Middle Europe Winter Time | Middle Europe |
| MEST | 43 | +02:00 | Middle Europe Summer Time | Middle Europe |
| MEZ | 44 | +01:00 | Middle Europe Zone | Middle Europe |
| NOR | 45 | +01:00 | Norway Standard Time | Norway |
| SET | 46 | +01:00 | Seychelles Time | Seychelles |
| SWT | 47 | +01:00 | Swedish Winter Time | Swedish |
| SST | 47 | +02:00 | Swedish Summer Time | Swedish |
| GMT | 48 | 00:00 | Greenwich Mean Time | Great Britain |
| BST | 48 | +01:00 | British Summer Time | Great Britain |
| WET | 49 | 00:00 | Western Europe | Western Europe |
| WETDST | 49 | +01:00 | Western Europe Daylight Time | Western Europe |
| WAT | 50 | -01:00 | West Africa Time | West Africa |
| ZP-2 | 51 | -02:00 | GMT -2 hours | Zone GMT -2 Hours |
| ZP-3 | 52 | -03:00 | GMT -3 hours | Zone GMT -3 Hours |
| NFT | 53 | -03:30 | Newfoundland Standard Time | Newfoundland |
| NDT | 53 | -02:30 | Newfoundland Daylight Time | Newfoundland |
| AFT | 54 | +04:30 | Afghanistan Time | Afghanistan |