| Cape Town Caldes d'Estrac | Central European Time | 00:00 |
| Cape Town Calbe | Central European Time | 00:00 |
| Cape Town Chagford | United Kingdom Time | 01:00 |
| Cape Town Chadstone | Eastern Australia Time | -08:00 |
| Cape Town Chae Ramae | Indochina Time | -05:00 |
| Cape Town Chablis | Central European Time | 00:00 |
| Cape Town Chalong | Indochina Time | -05:00 |
| Cape Town Chakpachuria | India Standard Time | -03:30 |
| Cape Town Cocoa Beach | Eastern Time | 06:00 |
| Cape Town Coconut Grove | Central Australia Time | -07:30 |
| Cape Town Cobh | Ireland Time | 01:00 |
| Cape Town Dapto | Eastern Australia Time | -08:00 |
| Cape Town Clonakilty | Ireland Time | 01:00 |
| Cape Town Clonmel | Ireland Time | 01:00 |
| Cape Town Clinton | Central Time | 07:00 |
| Cape Town Clontarf | Ireland Time | 01:00 |
| Cape Town Clusane | Central European Time | 00:00 |
| Cape Town Clyde | Eastern Australia Time | -08:00 |
| Cape Town Clute | Central Time | 07:00 |
| Cape Town Clyst Saint Mary | United Kingdom Time | 01:00 |
| Cape Town Coacalco de Berriozabal | Central Time | 07:00 |
| Cape Town Coalinga | Pacific Time | 09:00 |
| Cape Town Clearwater | Eastern Time | 06:00 |
| Cape Town Clayton South | Eastern Australia Time | -08:00 |
| Cape Town Clayton | Eastern Time | 06:00 |
| Cape Town Cle Elum | Pacific Time | 09:00 |
| Cape Town Clear Lake | Central Time | 07:00 |
| Cape Town Clawson | Eastern Time | 06:00 |
| Cape Town Clemson | Eastern Time | 06:00 |
| Cape Town Cleobury Mortimer | United Kingdom Time | 01:00 |
| Cape Town Clerques | Central European Time | 00:00 |
| Cape Town Clervaux | Central European Time | 00:00 |
| Cape Town Clifton Hill | Eastern Australia Time | -08:00 |
| Cape Town Chandanpur | India Standard Time | -03:30 |
| Cape Town Chandigadh | India Standard Time | -03:30 |
| Cape Town Chandrapur | Nepal Time | -03:45 |
| Cape Town Chamblee | Eastern Time | 06:00 |
| Cape Town Chamonix | Central European Time | 00:00 |