| Gebze Bratislava | Central European Time | 01:00 |
| Gebze Gaya | India Standard Time | -02:30 |
| Gebze Udaipur | India Standard Time | -02:30 |
| Gebze Likasi | Central Africa Time | 01:00 |
| Gebze Luxor | Eastern European Time | 01:00 |
| Gebze Ibagué | Colombia Time | 08:00 |
| Gebze Shaoxing | China Time | -05:00 |
| Gebze Ivanovo | Moscow Time | 00:00 |
| Gebze Erzurum | Turkey Time | 00:00 |
| Gebze Akure | West Africa Time | 02:00 |
| Gebze Asyut | Eastern European Time | 01:00 |
| Gebze Jambi | Western Indonesia Time | -04:00 |
| Gebze Al Mansurah | Eastern European Time | 01:00 |
| Gebze Oakland | Pacific Time | 10:00 |
| Gebze Korba | India Standard Time | -02:30 |
| Gebze Bokaro Steel City | India Standard Time | -02:30 |
| Gebze San Juan | Atlantic Time | 07:00 |
| Gebze Kolwezi | Central Africa Time | 01:00 |
| Gebze Auckland | New Zealand Time | -09:00 |
| Gebze Sukkur | Pakistan Time | -02:00 |
| Gebze Mangaluru | India Standard Time | -02:30 |
| Gebze Luohe | China Time | -05:00 |
| Gebze Sebastopol | Simferopol Time | 00:00 |
| Gebze Shymkent | East Kazakhstan Time | -03:00 |
| Gebze Yangquan | China Time | -05:00 |
| Gebze Magnitogorsk | Yekaterinburg Time | -02:00 |
| Gebze Jhansi | India Standard Time | -02:30 |
| Gebze Florianópolis | Brasilia Time | 06:00 |
| Gebze Wandsbek | Central European Time | 01:00 |
| Gebze Santos | Brasilia Time | 06:00 |
| Gebze Maturín | Venezuela Time | 07:00 |
| Gebze Minneapolis | Central Time | 08:00 |
| Gebze Ardabil | Iran Time | -01:30 |
| Gebze Nagasaki | Japan Time | -06:00 |
| Gebze Chaoyang | China Time | -05:00 |
| Gebze Gaza | Eastern European Time | 00:00 |
| Gebze Kursk | Moscow Time | 00:00 |
| Gebze Al Ain | Gulf Standard Time | -01:00 |
| Gebze Jeju-si | Korean Time | -06:00 |
| Gebze Panama City | Eastern Time | 08:00 |
| Gebze Szczecin | Central European Time | 01:00 |
| Gebze Biên Hòa | Indochina Time | -04:00 |
| Gebze Villa Nueva | Central Time | 09:00 |
| Gebze Ribeirão das Neves | Brasilia Time | 06:00 |
| Gebze Hirakata | Japan Time | -06:00 |
| Gebze Oujda | Western European Time | 02:00 |
| Gebze Tanta | Eastern European Time | 01:00 |
| Gebze Newcastle | South Africa Standard Time | 01:00 |
| Gebze Xochimilco | Central Time | 08:00 |
| Gebze Nellore | India Standard Time | -02:30 |