En la siguiente tabla se pueden ver las Zonas Horarias existentes y las diferencias con respecto a GMT de varias ciudades de todo el mundo.
| Ciudad | Zona Horaria | Acrónimo | Diferencia |
| Wellington | GMT + 12 h | ||
| New-Caledonia | GMT + 11 h | ||
| Melbourne | Eastern Standard Time | EST | GMT + 10 h |
| Sydney | Eastern Standard Time | EST | GMT + 10 h |
| Vladivostok | Eastern Standard Time | EST | GMT + 10 h |
| Darwin | Central Standard Time | CST | GMT + 9.5 h |
| Seúl | GMT + 9 h | ||
| Tokyo | GMT + 9 h | ||
| Hongkong | Western Standard Time | WST | GMT + 8 h |
| Beijing | Western Standard Time | WST | GMT + 8 h |
| Perth | Western Standard Time | WST | GMT + 8 h |
| Singapore | Western Standard Time | WST | GMT + 8 h |
| Bangkok | GMT + 7 h | ||
| Jakarta | GMT + 7 h | ||
| Novosibirsk | GMT + 7 h | ||
| Almaty | GMT + 6 h | ||
| Calcuta | GMT + 5.5 h | ||
| Nueva Delhi | GMT + 5.5 h | ||
| Ashgabad | GMT + 5 h | ||
| Karachi | GMT + 5 h | ||
| Mauritius | GMT + 4 h | ||
| Bagdad | Moscow Time | MSK | GMT + 3 h |
| Moscú | Moscow Time | MSK | GMT + 3 h |
| Nairobi | Moscow Time | MSK | GMT + 3 h |
| Ankara | Eastern Europe Time | EET | GMT + 2 h |
| Helsinki | Eastern Europe Time | EET | GMT + 2 h |
| Estambul | Eastern Europe Time | EET | GMT + 2 h |
| Johannesburg | Eastern Europe Time | EET | GMT + 2 h |
| Cairo | Eastern Europe Time | EET | GMT + 2 h |
| Kiev | Eastern Europe Time | EET | GMT + 2 h |
| Windhoek | Eastern Europe Time | EET | GMT + 2 h |
| Berlín | Central European Time | CET | GMT + 1 h |
| Madrid | Central European Time | CET | GMT + 1 h |
| París | Central European Time | CET | GMT + 1 h |
| Roma | Central European Time | CET | GMT + 1 h |
| Estocolmo | Central European Time | CET | GMT + 1 h |
| Trípoli | Central European Time | CET | GMT + 1 h |
| Túnez | Central European Time | CET | GMT + 1 h |
| Dakar | Greenwich Mean Time | GMT | GMT |
| Lisboa | Greenwich Mean Time | GMT | GMT |
| Londres | Greenwich Mean Time | GMT | GMT |
| Reykjavik | Greenwich Mean Time | GMT | GMT |
| Azores | GMT - 1 h | ||
| Cap Verde | GMT - 1 h | ||
| Buenos Aires | GMT - 3 h | ||
| Río de Janeiro | GMT - 3 h | ||
| Caracas | Atlantic Standard Time | AST | GMT - 4 h |
| La Paz | Atlantic Standard Time | AST | GMT - 4 h |
| Santiago de Chile | Atlantic Standard Time | AST | GMT - 4 h |
| Montreal | Eastern Standard Time | EST | GMT - 5 h |
| New York | Eastern Standard Time | EST | GMT - 5 h |
| Washington | Eastern Standard Time | EST | GMT - 5 h |
| Chicago | Central Standard Time | CST | GMT - 6 h |
| México DF | Central Standard Time | CST | GMT - 6 h |
| Denver | Mountain Standard Time | MST | GMT - 7 h |
| Los Ángeles | Pacific Standard Time | PST | GMT - 8 h |
| San Francisco | Pacific Standard Time | PST | GMT - 8 h |
| Anchorage | Alaska Standard Time | AKST | GMT - 9 h |
| Fairbanks | Alaska Standard Time | AKST | GMT - 9 h |
| Honolulú | Hawaiian Standard Time | HST | GMT - 10 h |
| Westsamoa | GMT - 11 h | ||
| Central European Summer Time | CEST | GMT + 2 h | |
| Western European Summer Time | WEST | GMT + 1 h | |
| Eastern European Summer Time | EEST | GMT + 3 h | |
| British Summer Time | BST | GMT + 1 h | |
| Irish Summer Time | IST | GMT + 1 h |