| Gebze Djougou | West Africa Time | 02:00 |
| Gebze Sylhet | Bangladesh Time | -03:00 |
| Gebze Garland | Central Time | 08:00 |
| Gebze Ratlam | India Standard Time | -02:30 |
| Gebze Scottsdale | Mountain Time | 10:00 |
| Gebze Košice | Central European Time | 01:00 |
| Gebze Chernivtsi | Eastern European Time | 00:00 |
| Gebze Dera Ghāzi Khān | Pakistan Time | -02:00 |
| Gebze Yuci | China Time | -05:00 |
| Gebze Sant Martí | Central European Time | 01:00 |
| Gebze Sahiwal | Pakistan Time | -02:00 |
| Gebze Ternopil | Eastern European Time | 00:00 |
| Gebze Vitoria-Gasteiz | Central European Time | 01:00 |
| Gebze Yakutsk | Yakutsk Time | -06:00 |
| Gebze Chesapeake | Eastern Time | 07:00 |
| Gebze Caruaru | Brasilia Time | 06:00 |
| Gebze Qina | Eastern European Time | 01:00 |
| Gebze Boa Vista | Amazon Time | 07:00 |
| Gebze Kediri | Western Indonesia Time | -04:00 |
| Gebze Georgetown | Guyana Time | 07:00 |
| Gebze Ramagundam | India Standard Time | -02:30 |
| Gebze Kismayo | East Africa Time | 00:00 |
| Gebze Ibb | Arabian Time | 00:00 |
| Gebze Türkmenabat | Turkmenistan Time | -02:00 |
| Gebze North Las Vegas | Pacific Time | 10:00 |
| Gebze Granada | Central European Time | 01:00 |
| Gebze Nizhnekamsk | Moscow Time | 00:00 |
| Gebze Porto Novo | West Africa Time | 02:00 |
| Gebze Halle (Saale) | Central European Time | 01:00 |
| Gebze Kitchener | Eastern Time | 07:00 |
| Gebze Centurion | South Africa Standard Time | 01:00 |
| Gebze Tagum City | Philippine Time | -05:00 |
| Gebze Hamburg-Mitte | Central European Time | 01:00 |
| Gebze Dzerzhinsk | Moscow Time | 00:00 |
| Gebze Takoradi | Greenwich Mean Time | 03:00 |
| Gebze Kiel | Central European Time | 01:00 |
| Gebze Linfen | China Time | -05:00 |
| Gebze Fremont | Pacific Time | 10:00 |
| Gebze Bordeaux | Central European Time | 01:00 |
| Gebze Sri Ganganagar | India Standard Time | -02:30 |
| Gebze Chigasaki | Japan Time | -06:00 |
| Gebze Ghent | Central European Time | 01:00 |
| Gebze Taytay | Philippine Time | -05:00 |
| Gebze Soka | Japan Time | -06:00 |
| Gebze Ngaoundere | West Africa Time | 02:00 |
| Gebze Suncheon-si | Korean Time | -06:00 |
| Gebze Coatzacoalcos | Central Time | 08:00 |
| Gebze Syktyvkar | Moscow Time | 00:00 |
| Gebze Elche | Central European Time | 01:00 |
| Gebze Merca | East Africa Time | 00:00 |