| Clonakilty Cortona | Central European Time | -01:00 |
| Clonakilty Corte De' Frati | Central European Time | -01:00 |
| Clonakilty Corte Madera | Pacific Time | 08:00 |
| Clonakilty Cottage Grove | Pacific Time | 08:00 |
| Clonakilty Cottonwood | Mountain Time | 08:00 |
| Clonakilty Cotgrave | United Kingdom Time | 00:00 |
| Clonakilty Cotati | Pacific Time | 08:00 |
| Clonakilty Cosmopolis | Pacific Time | 08:00 |
| Clonakilty Costa Teguise | Western European Time | 00:00 |
| Clonakilty Donnalucata | Central European Time | -01:00 |
| Clonakilty Donji Vinjani | Central European Time | -01:00 |
| Clonakilty Dongying | China Time | -07:00 |
| Clonakilty Dorrego | Argentina Time | 04:00 |
| Clonakilty Dorrigo | Eastern Australia Time | -09:00 |
| Clonakilty Elmsdale | Atlantic Time | 04:00 |
| Clonakilty Eltham | New Zealand Time | -11:00 |
| Clonakilty Elsternwick | Eastern Australia Time | -09:00 |
| Clonakilty Elstree | United Kingdom Time | 00:00 |
| Clonakilty Els Hostalets de Pierola | Central European Time | -01:00 |
| Clonakilty Elsa | Central Time | 06:00 |
| Clonakilty Elmvale | Eastern Time | 05:00 |
| Clonakilty Elon | Eastern Time | 05:00 |
| Clonakilty Elora | Eastern Time | 05:00 |
| Clonakilty Embrun | Eastern Time | 05:00 |
| Clonakilty Elysburg | Eastern Time | 05:00 |
| Clonakilty Emalahleni | South Africa Standard Time | -01:00 |
| Clonakilty Elwood | Eastern Australia Time | -09:00 |
| Clonakilty Elx | Central European Time | -01:00 |
| Clonakilty Emerald Beach | Eastern Australia Time | -09:00 |
| Clonakilty Emeryville | Pacific Time | 08:00 |
| Clonakilty Emu Plains | Eastern Australia Time | -09:00 |
| Clonakilty Empuriabrava | Central European Time | -01:00 |
| Clonakilty Emmaus | Eastern Time | 05:00 |
| Clonakilty Enderby | Pacific Time | 08:00 |
| Clonakilty Engelberg | Central European Time | -01:00 |
| Clonakilty Enmore | Eastern Australia Time | -09:00 |
| Clonakilty England | Eastern European Time | -02:00 |
| Clonakilty Englishtown | Eastern Time | 05:00 |