| ACDT | Australian Central Daylight Time | Australia | UTC + 9.5 |
| ACST | Australian Central Standard Time | Australia | UTC + 8.5 |
| ACT | Acre Time | South America | UTC -5 |
| ACWST | Australian Central Western Standard Time | Australia | UTC + 8.75 |
| ADT | Arabia Daylight Time | Asia | UTC + 3 |
| ADT | Atlantic Daylight Time | North America | UTC -3 |
| AEDT | Australian Eastern Daylight Time | Australia | UTC + 11 |
| AEST | Australian Eastern Standard Time | Australia | UTC + 10 |
| AFT | Afghanistan Time | Asia | UTC + 4.5 |
| AKDT | Alaska Daylight Time | North America | UTC -8 |
| AKST | Alaska Standard Time | North America | UTC -9 |
| ALMT | Alma-Ata Time | Asia | UTC + 6 |
| AMST | Amazon Summer Time | South America | UTC -3 |
| AMST | Armenia Summer Time | Asia | UTC + 4 |
| AMT | Amazon Time | South America | UTC -4 |
| AMT | Armenia Time | Asia | UTC + 4 |
| ANAST | Anadyr Summer Time | Asia | UTC + 12 |
| ANAT | Anadyr Time | Asia | UTC + 12 |
| AQTT | Aqtobe Time | Asia | UTC + 5 |
| ART | Argentina Time | South America | UTC -3 |
| AST | Arabia Standard Time | Asia | UTC + 3 |
| AST | Atlantic Standard Time | North America | UTC -4 |
| AWDT | Australian Western Daylight Time | Australia | UTC + 9 |
| AWST | Australian Western Standard Time | Australia | UTC + 8 |
| AZOST | Azores Summer Time | Atlantic | UTC 0 |
| AZOT | Azores Time | Atlantic | UTC -1 |
| AZST | Azerbaijan Summer Time | Asia | UTC + 4 |
| AZT | Azerbaijan Time | Asia | UTC + 4 |
| AoE | Anywhere on Earth | Pacific | UTC + 12 |
| BNT | Brunei Darussalam Time | Asia | UTC + 8 |
| BOT | Bolivia Time | South America | UTC -4 |
| BRST | Braslia Summer Time | South America | UTC -2 |
| BRT | Braslia Time | South America | UTC -3 |
| BST | Bangladesh Standard Time | Asia | UTC + 6 |
| BST | Bougainville Standard Time | Pacific | UTC + 11 |
| BST | British Summer Time | Europe | UTC + 1 |
| BTT | Bhutan Time | Asia | UTC + 6 |
| CAST | Casey Time | Antarctica | UTC + 8 |
| CAT | Central Africa Time | Africa | UTC + 2 |
| CCT | Cocos Islands Time | Indian Ocean | UTC + 6.5 |
| CDT | Central Daylight Time | North America | UTC -5 |
| CDT | Cuba Daylight Time | Caribbean | UTC -4 |
| CEST | Central European Summer Time | Europe | UTC + 2 |
| CET | Central European Time | Europe | UTC + 1 |
| CHADT | Chatham Island Daylight Time | Pacific | UTC + 12.75 |
| CHAST | Chatham Island Standard Time | Pacific | UTC + 12.75 |
| CHOT | Choibalsan Time | Asia | UTC + 8 |
| CHUT | Chuuk Time | Pacific | UTC + 10 |
| CKT | Cook Island Time | Pacific | UTC -10 |
| CLST | Chile Summer Time | South America | UTC -3 |
| CLT | Chile Standard Time | South America | UTC -4 |
| COT | Colombia Time | South America | UTC -5 |
| CST | Central Standard Time | North America | UTC -6 |
| CST | China Standard Time | Asia | UTC + 8 |
| CST | Cuba Standard Time | Caribbean | UTC -5 |
| CT | Central Time | North America | UTC -6 |
| CVT | Cape Verde Time | Africa | UTC -1 |
| CXT | Christmas Island Time | Australia | UTC + 7 |
| ChST | Chamorro Standard Time | Pacific | UTC + 10 |
| DAVT | Davis Time | Antarctica | UTC + 7 |
| DDUT | Dumont-d'Urville Time | Antarctica | UTC + 10 |
| EASST | Easter Island Summer Time | Pacific | UTC -5 |
| EAST | Easter Island Standard Time | Pacific | UTC -5 |
| EAT | Eastern Africa Time | Africa | UTC + 3 |
| ECT | Ecuador Time | South America | UTC -5 |
| EDT | Eastern Daylight Time | North America | UTC -4 |
| EEST | Eastern European Summer Time | Europe | UTC + 3 |
| EET | Eastern European Time | Europe | UTC + 2 |
| EGST | East Greenland Summer Time | North America | UTC 0 |
| EGT | East Greenland Time | North America | UTC -1 |
| EST | Eastern Standard Time | North America | UTC -5 |
| FET | Further-Eastern European Time | Europe | UTC + 3 |
| FJST | Fiji Summer Time | Pacific | UTC + 13 |
| FJT | Fiji Time | Pacific | UTC + 12 |
| FKST | Falkland Islands Summer Time | South America | UTC -3 |
| FKT | Falkland Island Time | South America | UTC -4 |
| FNT | Fernando de Noronha Time | South America | UTC -2 |
| GALT | Galapagos Time | Pacific | UTC -6 |
| GAMT | Gambier Time | Pacific | UTC -9 |
| GET | Georgia Standard Time | Asia | UTC + 4 |
| GFT | French Guiana Time | South America | UTC -3 |
| GILT | Gilbert Island Time | Pacific | UTC + 12 |
| GMT | Greenwich Mean Time | Europe | UTC 0 |
| GST | Gulf Standard Time | Asia | UTC + 4 |
| GST | South Georgia Time | South America | UTC -2 |
| GYT | Guyana Time | South America | UTC -4 |
| HADT | Hawaii-Aleutian Daylight Time | North America | UTC -9 |
| HAST | Hawaii-Aleutian Standard Time | North America | UTC -10 |
| HKT | Hong Kong Time | Asia | UTC + 8 |
| HOVT | Hovd Time | Asia | UTC + 7 |
| ICT | Indochina Time | Asia | UTC + 7 |
| IDT | Israel Daylight Time | Asia | UTC + 3 |
| IOT | Indian Chagos Time | Indian Ocean | UTC + 6 |
| IRDT | Iran Daylight Time | Asia | UTC + 4.5 |
| IRKST | Irkutsk Summer Time | Asia | UTC + 8 |
| IRKT | Irkutsk Time | Asia | UTC + 8 |
| IRST | Iran Standard Time | Asia | UTC + 3.5 |
| IST | India Standard Time | Asia | UTC + 5.5 |
| IST | Irish Standard Time | Europe | UTC + 1 |
| IST | Israel Standard Time | Asia | UTC + 2 |
| JST | Japan Standard Time | Asia | UTC + 9 |
| KGT | Kyrgyzstan Time | Asia | UTC + 6 |
| KOST | Kosrae Time | Pacific | UTC + 11 |
| KRAST | Krasnoyarsk Summer Time | Asia | UTC + 7 |
| KRAT | Krasnoyarsk Time | Asia | UTC + 7 |
| KST | Korea Standard Time | Asia | UTC + 9 |
| KUYT | Kuybyshev Time | Europe | UTC + 4 |
| LHDT | Lord Howe Daylight Time | Australia | UTC + 11 |
| LHST | Lord Howe Standard Time | Australia | UTC + 10.5 |
| LINT | Line Islands Time | Pacific | UTC + 14 |
| MAGST | Magadan Summer Time | Asia | UTC + 12 |
| MAGT | Magadan Time | Asia | UTC + 11 |
| MART | Marquesas Time | Pacific | UTC -8.5 |
| MAWT | Mawson Time | Antarctica | UTC + 5 |
| MDT | Mountain Daylight Time | North America | UTC -6 |
| MHT | Marshall Islands Time | Pacific | UTC + 12 |
| MMT | Myanmar Time | Asia | UTC + 6.5 |
| MSD | Moscow Daylight Time | Europe | UTC + 3 |
| MSK | Moscow Standard Time | Europe | UTC + 3 |
| MST | Mountain Standard Time | North America | UTC -7 |
| MUT | Mauritius Time | Africa | UTC + 4 |
| MVT | Maldives Time | Asia | UTC + 5 |
| MYT | Malaysia Time | Asia | UTC + 8 |
| NCT | New Caledonia Time | Pacific | UTC + 11 |
| NDT | Newfoundland Daylight Time | North America | UTC -2.5 |
| NFT | Norfolk Time | Australia | UTC + 11 |
| NOVST | Novosibirsk Summer Time | Asia | UTC + 7 |
| NOVT | Novosibirsk Time | Asia | UTC + 7 |
| NPT | Nepal Time | Asia | UTC + 5.75 |
| NRT | Nauru Time | Pacific | UTC + 12 |
| NST | Newfoundland Standard Time | North America | UTC -3.5 |
| NUT | Niue Time | Pacific | UTC -11 |
| NZDT | New Zealand Daylight Time | Pacific | UTC + 13 |
| NZST | New Zealand Standard Time | Pacific | UTC + 12 |
| OMSST | Omsk Summer Time | Asia | UTC + 6 |
| OMST | Omsk Standard Time | Asia | UTC + 6 |
| ORAT | Oral Time | Asia | UTC + 5 |
| PDT | Pacific Daylight Time | North America | UTC -7 |
| PET | Peru Time | South America | UTC -5 |
| PETST | Kamchatka Summer Time | Asia | UTC + 12 |
| PETT | Kamchatka Time | Asia | UTC + 12 |
| PGT | Papua New Guinea Time | Pacific | UTC + 10 |
| PHOT | Phoenix Island Time | Pacific | UTC + 13 |
| PHT | Philippine Time | Asia | UTC + 8 |
| PKT | Pakistan Standard Time | Asia | UTC + 5 |
| PMDT | Pierre & Miquelon Daylight Time | North America | UTC -2 |
| PMST | Pierre & Miquelon Standard Time | North America | UTC -3 |
| PONT | Pohnpei Standard Time | Pacific | UTC + 11 |
| PST | Pacific Standard Time | North America | UTC -8 |
| PST | Pitcairn Standard Time | Pacific | UTC -8 |
| PWT | Palau Time | Pacific | UTC + 9 |
| PYST | Paraguay Summer Time | South America | UTC -3 |
| PYT | Paraguay Time | South America | UTC -4 |
| QYZT | Qyzylorda Time | Asia | UTC + 6 |
| RET | Reunion Time | Africa | UTC + 4 |
| ROTT | Rothera Time | Antarctica | UTC -3 |
| SAKT | Sakhalin Time | Asia | UTC + 10 |
| SAMT | Samara Time | Europe | UTC + 4 |
| SAST | South Africa Standard Time | Africa | UTC + 2 |
| SBT | Solomon Islands Time | Pacific | UTC + 11 |
| SCT | Seychelles Time | Africa | UTC + 4 |
| SGT | Singapore Time | Asia | UTC + 8 |
| SRET | Srednekolymsk Time | Asia | UTC + 11 |
| SRT | Suriname Time | South America | UTC -3 |
| SST | Samoa Standard Time | Pacific | UTC -11 |
| SYOT | Syowa Time | Antarctica | UTC + 3 |
| TAHT | Tahiti Time | Pacific | UTC -10 |
| TFT | French Southern and Antarctic Time | Indian Ocean | UTC + 5 |
| TJT | Tajikistan Time | Asia | UTC + 5 |
| TKT | Tokelau Time | Pacific | UTC + 13 |
| TLT | East Timor Time | Asia | UTC + 9 |
| TMT | Turkmenistan Time | Asia | UTC + 5 |
| TOT | Tonga Time | Pacific | UTC + 13 |
| TVT | Tuvalu Time | Pacific | UTC + 12 |
| ULAT | Ulaanbaatar Time | Asia | UTC + 8 |
| UYST | Uruguay Summer Time | South America | UTC -2 |
| UYT | Uruguay Time | South America | UTC -3 |
| UZT | Uzbekistan Time | Asia | UTC + 5 |
| VET | Venezuelan Standard Time | South America | UTC -3.5 |
| VLAST | Vladivostok Summer Time | Asia | UTC + 11 |
| VLAT | Vladivostok Time | Asia | UTC + 10 |
| VOST | Vostok Time | Antarctica | UTC + 6 |
| VUT | Vanuatu Time | Pacific | UTC + 11 |
| WAKT | Wake Time | Pacific | UTC + 12 |
| WARST | Western Argentine Summer Time | South America | UTC -3 |
| WAST | West Africa Summer Time | Africa | UTC + 2 |
| WAT | West Africa Time | Africa | UTC + 1 |
| WEST | Western European Summer Time | Europe | UTC + 1 |
| WET | Western European Time | Europe | UTC 0 |
| WFT | Wallis and Futuna Time | Pacific | UTC + 12 |
| WGST | West Greenland Summer Time | North America | UTC -2 |
| WGT | West Greenland Time | North America | UTC -3 |
| WIB | Western Indonesian Time | Asia | UTC + 7 |
| WIT | Eastern Indonesian Time | Asia | UTC + 9 |
| WITA | Central Indonesian Time | Asia | UTC + 8 |
| WST | West Samoa Time | Pacific | UTC + 13 |
| WST | Western Sahara Summer Time | Africa | UTC + 1 |
| WT | Western Sahara Standard Time | Africa | UTC 0 |
| YAKST | Yakutsk Summer Time | Asia | UTC + 10 |
| YAKT | Yakutsk Time | Asia | UTC + 9 |
| YAPT | Yap Time | Pacific | UTC + 10 |
| YEKST | Yekaterinburg Summer Time | Asia | UTC + 5 |
| YEKT | Yekaterinburg Time | Asia | UTC + 5 |