| Grenchen Wellington | United Kingdom Time | 01:00 |
| Grenchen Avry | Central European Time | 00:00 |
| Grenchen Hemmadi | India Standard Time | -03:30 |
| Grenchen Mohol | India Standard Time | -03:30 |
| Grenchen Welch | Eastern Time | 06:00 |
| Grenchen Preserje | Central European Time | 00:00 |
| Grenchen Gramado | Brasilia Time | 05:00 |
| Grenchen Nador | Western European Time | 01:00 |
| Grenchen Weiz | Central European Time | 00:00 |
| Grenchen Avsallar Belediyesi | Turkey Time | -01:00 |
| Grenchen Grambling | Central Time | 07:00 |
| Grenchen Kühlungsborn | Central European Time | 00:00 |
| Grenchen Wellin | Central European Time | 00:00 |
| Grenchen Presevo | Central European Time | 00:00 |
| Grenchen Graikas | Eastern European Time | -01:00 |
| Grenchen Kukkundoor | India Standard Time | -03:30 |
| Grenchen Wenford Bridge | United Kingdom Time | 01:00 |
| Grenchen Appenzell District | Central European Time | 00:00 |
| Grenchen Grafton | Central Time | 07:00 |
| Grenchen Kullu | India Standard Time | -03:30 |
| Grenchen Wentworthville | Eastern Australia Time | -08:00 |
| Grenchen Prescott | Eastern Time | 06:00 |
| Grenchen Gräfenhainichen | Central European Time | 00:00 |
| Grenchen Kuluin | Eastern Australia Time | -08:00 |
| Grenchen Wennigsen | Central European Time | 00:00 |
| Grenchen Apple Springs | Central Time | 07:00 |
| Grenchen Grafschaft | Central European Time | 00:00 |
| Grenchen Kuala Sepetang | Malaysia Time | -06:00 |
| Grenchen Werlte | Central European Time | 00:00 |
| Grenchen Plainsboro Center | Eastern Time | 06:00 |
| Grenchen Grafton | Eastern Australia Time | -08:00 |
| Grenchen Kuala Ketil | Malaysia Time | -06:00 |
| Grenchen Goxhill | United Kingdom Time | 01:00 |
| Grenchen Applecross | Western Australia Time | -06:00 |
| Grenchen Govone | Central European Time | 00:00 |
| Grenchen Kuala Berang | Malaysia Time | -06:00 |
| Grenchen Gossau | Central European Time | 00:00 |
| Grenchen Prachatice | Central European Time | 00:00 |
| Grenchen Goult | Central European Time | 00:00 |
| Grenchen Kuala Lumpur | Malaysia Time | -06:00 |
| Grenchen Gort | Ireland Time | 01:00 |
| Grenchen Apollo Beach | Eastern Time | 06:00 |
| Grenchen Gosford | Eastern Australia Time | -08:00 |
| Grenchen Kuala Lumpur | Malaysia Time | -06:00 |
| Grenchen Gote | India Standard Time | -03:30 |
| Grenchen Prades | Central European Time | 00:00 |
| Grenchen Gotha | Eastern Time | 06:00 |
| Grenchen Kuala Lumpur | Malaysia Time | -06:00 |
| Grenchen Gothenburg | Central European Time | 00:00 |
| Grenchen Aoulouz | Western European Time | 01:00 |