| Semnan Chandigadh | India Standard Time | -01:00 |
| Semnan Bude | United Kingdom Time | 03:30 |
| Semnan Stutzheim-Offenheim | Central European Time | 02:30 |
| Semnan Carpinteria | Pacific Time | 11:30 |
| Semnan Chandanpur | India Standard Time | -01:00 |
| Semnan Carrouge | Central European Time | 02:30 |
| Semnan Tekonsha | Eastern Time | 08:30 |
| Semnan Carvoeiro | Western European Time | 03:30 |
| Semnan Chamonix | Central European Time | 02:30 |
| Semnan Caselle Torinese | Central European Time | 02:30 |
| Semnan Tehachapi | Pacific Time | 11:30 |
| Semnan Casale Marittimo | Central European Time | 02:30 |
| Semnan Chamblee | Eastern Time | 08:30 |
| Semnan Casaletto Ceredano | Central European Time | 02:30 |
| Semnan Tekapo | New Zealand Time | -07:30 |
| Semnan Chalong | Indochina Time | -02:30 |
| Semnan Teisendorf | Central European Time | 02:30 |
| Semnan Chablis | Central European Time | 02:30 |
| Semnan Tecuala | Mexican Pacific Time | 10:30 |
| Semnan Cadiz | Central Time | 09:30 |
| Semnan Tecumseh | Eastern Time | 08:30 |
| Semnan Cadereyta Jiménez | Central Time | 09:30 |
| Semnan Tecoma | Eastern Australia Time | -05:30 |
| Semnan Chadstone | Eastern Australia Time | -05:30 |
| Semnan Strafford | Eastern Time | 08:30 |
| Semnan Chae Ramae | Indochina Time | -02:30 |
| Semnan Stowe | Eastern Time | 08:30 |
| Semnan Chagford | United Kingdom Time | 03:30 |
| Semnan Stratham | Eastern Time | 08:30 |
| Semnan Chakpachuria | India Standard Time | -01:00 |
| Semnan Strangford | United Kingdom Time | 03:30 |
| Semnan Cabudare | Venezuela Time | 08:30 |
| Semnan Strasburg | Eastern Time | 08:30 |
| Semnan Cabrils | Central European Time | 02:30 |
| Semnan Story City | Central Time | 09:30 |
| Semnan Cadalso | Central European Time | 02:30 |
| Semnan Stonington | Eastern Time | 08:30 |
| Semnan Cadalso de los Vidrios | Central European Time | 02:30 |
| Semnan Stony Plain | Mountain Time | 10:30 |
| Semnan Cabazon | Pacific Time | 11:30 |
| Semnan Stonyfell | Central Australia Time | -05:00 |
| Semnan Cabo de Gata | Central European Time | 02:30 |
| Semnan Stone Harbor | Eastern Time | 08:30 |
| Semnan Cabramatta | Eastern Australia Time | -05:30 |
| Semnan Stone Mountain | Eastern Time | 08:30 |
| Semnan Cabrerets | Central European Time | 02:30 |
| Semnan Stonegate | United Kingdom Time | 03:30 |
| Semnan Boppelsen | Central European Time | 02:30 |
| Semnan Sturbridge | Eastern Time | 08:30 |
| Semnan Boquete | Eastern Time | 09:30 |