| Gebze Sukabumi | Western Indonesia Time | -04:00 |
| Gebze Brașov | Eastern European Time | 00:00 |
| Gebze Komsomolsk-on-Amur | Vladivostok Time | -07:00 |
| Gebze Hakodate | Japan Time | -06:00 |
| Gebze Bab Ezzouar | Central European Time | 02:00 |
| Gebze Mokolo | West Africa Time | 02:00 |
| Gebze Caucaia | Brasilia Time | 06:00 |
| Gebze Strasbourg | Central European Time | 01:00 |
| Gebze Belfast | United Kingdom Time | 02:00 |
| Gebze Kashgar | China Time | -05:00 |
| Gebze Ramadi | Arabian Time | 00:00 |
| Gebze Ichalkaranji | India Standard Time | -02:30 |
| Gebze Ibaraki | Japan Time | -06:00 |
| Gebze Yao | Japan Time | -06:00 |
| Gebze Herat | Afghanistan Time | -01:30 |
| Gebze Guantánamo | Cuba Time | 07:00 |
| Gebze Nal'chik | Moscow Time | 00:00 |
| Gebze Baguio | Philippine Time | -05:00 |
| Gebze Petrópolis | Brasilia Time | 06:00 |
| Gebze Ar-Rayyān | Arabian Time | 00:00 |
| Gebze Wiesbaden | Central European Time | 01:00 |
| Gebze Montería | Colombia Time | 08:00 |
| Gebze Kashan | Iran Time | -01:30 |
| Gebze Ljubljana | Central European Time | 01:00 |
| Gebze Kakogawa | Japan Time | -06:00 |
| Gebze Tasikmalaya | Western Indonesia Time | -04:00 |
| Gebze Vijayapura | India Standard Time | -02:30 |
| Gebze Orlando | Eastern Time | 07:00 |
| Gebze Linyi | China Time | -05:00 |
| Gebze Derby | United Kingdom Time | 02:00 |
| Gebze San Pedro | Philippine Time | -05:00 |
| Gebze Gelsenkirchen | Central European Time | 01:00 |
| Gebze Ciudad Victoria | Central Time | 08:00 |
| Gebze Mogpo | Korean Time | -06:00 |
| Gebze Russeifa | Eastern European Time | 00:00 |
| Gebze Windhoek | Central Africa Time | 01:00 |
| Gebze Tshikapa | Central Africa Time | 01:00 |
| Gebze Kafr El-Dawar | Eastern European Time | 01:00 |
| Gebze Tokushima | Japan Time | -06:00 |
| Gebze Haifa | Israel Time | 00:00 |
| Gebze Sterlitamak | Yekaterinburg Time | -02:00 |
| Gebze Ha'il | Arabian Time | 00:00 |
| Gebze Eixample | Central European Time | 01:00 |
| Gebze Chengzhong | China Time | -05:00 |
| Gebze Wuzhou | China Time | -05:00 |
| Gebze Chula Vista | Pacific Time | 10:00 |
| Gebze Hulan Ergi | China Time | -05:00 |
| Gebze Aizawl | India Standard Time | -02:30 |
| Gebze Aachen | Central European Time | 01:00 |
| Gebze Sumgayit | Azerbaijan Time | -01:00 |