| Oliver Clonmel | Ireland Time | -08:00 |
| Oliver Clontarf | Ireland Time | -08:00 |
| Oliver Clinton | Central Time | -02:00 |
| Oliver Clifton Hill | Eastern Australia Time | -17:00 |
| Oliver Clawson | Eastern Time | -03:00 |
| Oliver Clearwater | Eastern Time | -03:00 |
| Oliver Clerques | Central European Time | -09:00 |
| Oliver Clervaux | Central European Time | -09:00 |
| Oliver Clemson | Eastern Time | -03:00 |
| Oliver Cleobury Mortimer | United Kingdom Time | -08:00 |
| Oliver Clayton South | Eastern Australia Time | -17:00 |
| Oliver Clayton | Eastern Time | -03:00 |
| Oliver Cle Elum | Pacific Time | 00:00 |
| Oliver Clear Lake | Central Time | -02:00 |
| Oliver Chandigadh | India Standard Time | -12:30 |
| Oliver Chandrapur | Nepal Time | -12:45 |
| Oliver Chandanpur | India Standard Time | -12:30 |
| Oliver Chamblee | Eastern Time | -03:00 |
| Oliver Chamonix | Central European Time | -09:00 |
| Oliver Chalong | Indochina Time | -14:00 |
| Oliver Brahmavar | India Standard Time | -12:30 |
| Oliver Cala Ferrera | Central European Time | -09:00 |
| Oliver Cala Millor | Central European Time | -09:00 |
| Oliver Calaf | Central European Time | -09:00 |
| Oliver Calbe | Central European Time | -09:00 |
| Oliver Caldes d'Estrac | Central European Time | -09:00 |
| Oliver Califon | Eastern Time | -03:00 |
| Oliver California | Eastern Time | -03:00 |
| Oliver Calimesa | Pacific Time | 00:00 |
| Oliver Calolziocorte | Central European Time | -09:00 |
| Oliver Caloocan | Philippine Time | -15:00 |
| Oliver Calistoga | Pacific Time | 00:00 |
| Oliver Chagford | United Kingdom Time | -08:00 |
| Oliver Chadstone | Eastern Australia Time | -17:00 |
| Oliver Chae Ramae | Indochina Time | -14:00 |
| Oliver Chakpachuria | India Standard Time | -12:30 |
| Oliver Calvi | Central European Time | -09:00 |
| Oliver Chablis | Central European Time | -09:00 |