| Sidmouth Fort Atkinson | Central Time | 06:00 |
| Sidmouth Fort Bliss | Mountain Time | 07:00 |
| Sidmouth Forest | Central European Time | -01:00 |
| Sidmouth Fordham | United Kingdom Time | 00:00 |
| Sidmouth Footscray | Eastern Australia Time | -09:00 |
| Sidmouth Foresters Falls | Eastern Time | 05:00 |
| Sidmouth Forestville | Eastern Australia Time | -09:00 |
| Sidmouth Forest Hill | Eastern Australia Time | -09:00 |
| Sidmouth Glasgow | United Kingdom Time | 00:00 |
| Sidmouth Glasgow | Central Time | 06:00 |
| Sidmouth Gland | Central European Time | -01:00 |
| Sidmouth Glandore | Central Australia Time | -08:30 |
| Sidmouth Glarus | Central European Time | -01:00 |
| Sidmouth Gladstone Park | Eastern Australia Time | -09:00 |
| Sidmouth Gladwin | Eastern Time | 05:00 |
| Sidmouth Giżyce | Central European Time | -01:00 |
| Sidmouth Goa | India Standard Time | -04:30 |
| Sidmouth Goa | India Standard Time | -04:30 |
| Sidmouth Hakata Ward | Japan Time | -08:00 |
| Sidmouth Glis | Central European Time | -01:00 |
| Sidmouth Glenside | Eastern Time | 05:00 |
| Sidmouth Glenunga | Central Australia Time | -08:30 |
| Sidmouth Glenorchy | Eastern Australia Time | -09:00 |
| Sidmouth Glenfield | Eastern Australia Time | -09:00 |
| Sidmouth Glenelg | Central Australia Time | -08:30 |
| Sidmouth Glendenning | Eastern Australia Time | -09:00 |
| Sidmouth Glendhu Bay | New Zealand Time | -11:00 |
| Sidmouth Glastonbury | United Kingdom Time | 00:00 |
| Sidmouth Glebe | Eastern Australia Time | -09:00 |
| Sidmouth Glen Allen | Eastern Time | 05:00 |
| Sidmouth Glen Rock | Eastern Time | 05:00 |
| Sidmouth Glen Waverley | Eastern Australia Time | -09:00 |
| Sidmouth Glencoe | United Kingdom Time | 00:00 |
| Sidmouth Glendale | Eastern Australia Time | -09:00 |
| Sidmouth Glen Huntly | Eastern Australia Time | -09:00 |
| Sidmouth Corinth | Central Time | 06:00 |
| Sidmouth Corella | Central European Time | -01:00 |
| Sidmouth Corfu | Eastern European Time | -02:00 |
| Sidmouth Coromandel | New Zealand Time | -11:00 |
| Sidmouth Corolla | Eastern Time | 05:00 |
| Sidmouth Corning | Eastern Time | 05:00 |
| Sidmouth Cornville | Mountain Time | 08:00 |
| Sidmouth Cornwall-on-Hudson | Eastern Time | 05:00 |
| Sidmouth Cornwall | Eastern Time | 05:00 |
| Sidmouth Dharamshala | India Standard Time | -04:30 |
| Sidmouth Devizes | United Kingdom Time | 00:00 |
| Sidmouth Devrukh | India Standard Time | -04:30 |
| Sidmouth Dhaka | Bangladesh Time | -05:00 |
| Sidmouth Dexter | Central Time | 06:00 |
| Sidmouth Dewey Beach | Eastern Time | 05:00 |