| Sirsa Elda | Central European Time | 03:30 |
| Sirsa Djelida | Central European Time | 04:30 |
| Sirsa Distrito Federal | Central Time | 10:30 |
| Sirsa El Médano | Western European Time | 04:30 |
| Sirsa El Ma Labiodh | Central European Time | 04:30 |
| Sirsa Djerba Midun | Central European Time | 04:30 |
| Sirsa Djendel | Central European Time | 04:30 |
| Sirsa Djilali Ben Amar | Central European Time | 04:30 |
| Sirsa Court-St.-Etienne | Central European Time | 03:30 |
| Sirsa Courthézon | Central European Time | 03:30 |
| Sirsa Cova da Piedade | Western European Time | 04:30 |
| Sirsa Coulter | United Kingdom Time | 04:30 |
| Sirsa Courmayeur | Central European Time | 03:30 |
| Sirsa Cotgrave | United Kingdom Time | 04:30 |
| Sirsa Costa Teguise | Western European Time | 04:30 |
| Sirsa Cotati | Pacific Time | 12:30 |
| Sirsa Cottonwood | Mountain Time | 12:30 |
| Sirsa Cottage Grove | Pacific Time | 12:30 |
| Sirsa Corralejo | Western European Time | 04:30 |
| Sirsa Cortona | Central European Time | 03:30 |
| Sirsa Corte De' Frati | Central European Time | 03:30 |
| Sirsa Corte Madera | Pacific Time | 12:30 |
| Sirsa Costa da Caparica | Western European Time | 04:30 |
| Sirsa Costa d'en Blanes | Central European Time | 03:30 |
| Sirsa Cosmopolis | Pacific Time | 12:30 |
| Sirsa Covington | Central Time | 10:30 |
| Sirsa Cowaramup | Western Australia Time | -02:30 |
| Sirsa Cozumel | Eastern Time | 10:30 |
| Sirsa Digne | Central European Time | 03:30 |
| Sirsa Differdange | Central European Time | 03:30 |
| Sirsa Cramlington | United Kingdom Time | 04:30 |
| Sirsa Dikson | Krasnoyarsk Time | -01:30 |
| Sirsa Dikili | Turkey Time | 02:30 |
| Sirsa Dillingen | Central European Time | 03:30 |
| Sirsa Dinant | Central European Time | 03:30 |
| Sirsa Dingle | Ireland Time | 04:30 |
| Sirsa Dillon | Mountain Time | 11:30 |
| Sirsa Dinan | Central European Time | 03:30 |