| Gebze Bangkok | Indochina Time | -04:00 |
| Gebze Princeton | Eastern Time | 07:00 |
| Gebze Oberlin | Eastern Time | 07:00 |
| Gebze Ponte do Rol | Western European Time | 02:00 |
| Gebze Greyton | South Africa Standard Time | 01:00 |
| Gebze Pukalani | Hawaii-Aleutian Time | 13:00 |
| Gebze Corte Madera | Pacific Time | 10:00 |
| Gebze Reifferscheid | Central European Time | 01:00 |
| Gebze Bangkok | Indochina Time | -04:00 |
| Gebze Santa Catarina | Central Time | 08:00 |
| Gebze Obernberg am Brenner | Central European Time | 01:00 |
| Gebze Ponte Fabbrica | Central European Time | 01:00 |
| Gebze Grezzana | Central European Time | 01:00 |
| Gebze Pukekohe | New Zealand Time | -09:00 |
| Gebze Cimadolmo | Central European Time | 01:00 |
| Gebze Rehoboth Beach | Eastern Time | 07:00 |
| Gebze Bangor | United Kingdom Time | 02:00 |
| Gebze Senden | Central European Time | 01:00 |
| Gebze Oak Bluffs | Eastern Time | 07:00 |
| Gebze Ponte Nizza | Central European Time | 01:00 |
| Gebze Groß Grönau | Central European Time | 01:00 |
| Gebze Puerto Viejo de Talamanca | Central Time | 09:00 |
| Gebze Cifuentes | Central European Time | 01:00 |
| Gebze Rehovot | Israel Time | 00:00 |
| Gebze Bann | Central European Time | 01:00 |
| Gebze Sendra | India Standard Time | -02:30 |
| Gebze Oak Brook | Central Time | 08:00 |
| Gebze Pontresina | Central European Time | 01:00 |
| Gebze Grindelwald | Central European Time | 01:00 |
| Gebze Puerto Vallarta | Central Time | 08:00 |
| Gebze Cidade Ocidental | Brasilia Time | 06:00 |
| Gebze Reichenau im Mühlkreis | Central European Time | 01:00 |
| Gebze Banner Elk | Eastern Time | 07:00 |
| Gebze Senegal | Peru Time | 08:00 |
| Gebze Oakdale | United Kingdom Time | 02:00 |
| Gebze Pontian District | Malaysia Time | -05:00 |
| Gebze Grinnell | Central Time | 08:00 |
| Gebze Owego | Eastern Time | 07:00 |
| Gebze Cottonwood | Mountain Time | 10:00 |
| Gebze Regencós | Central European Time | 01:00 |
| Gebze Asangaon | India Standard Time | -02:30 |
| Gebze Sengurichi | India Standard Time | -02:30 |
| Gebze Oakdale | Pacific Time | 10:00 |
| Gebze Ponte Tresa | Central European Time | 01:00 |
| Gebze Grosse Pointe Park | Eastern Time | 07:00 |
| Gebze Piovene Rocchette | Central European Time | 01:00 |
| Gebze Cottage Grove | Pacific Time | 10:00 |
| Gebze Regensdorf | Central European Time | 01:00 |
| Gebze Arvidsjaur | Central European Time | 01:00 |
| Gebze Sans Souci | Eastern Australia Time | -07:00 |