| Basildon Clawson | Eastern Time | 05:00 |
| Basildon Cannington | Eastern Time | 05:00 |
| Basildon Chandrapur | Nepal Time | -04:45 |
| Basildon Canley Heights | Eastern Australia Time | -09:00 |
| Basildon Clemson | Eastern Time | 05:00 |
| Basildon Canley Vale | Eastern Australia Time | -09:00 |
| Basildon Cleobury Mortimer | United Kingdom Time | 00:00 |
| Basildon Canmore | Mountain Time | 07:00 |
| Basildon Clearwater | Eastern Time | 05:00 |
| Basildon Clerques | Central European Time | -01:00 |
| Basildon Clervaux | Central European Time | -01:00 |
| Basildon Chandigadh | India Standard Time | -04:30 |
| Basildon Chandanpur | India Standard Time | -04:30 |
| Basildon Chamonix | Central European Time | -01:00 |
| Basildon Chamblee | Eastern Time | 05:00 |
| Basildon Cadiz | Central Time | 06:00 |
| Basildon Chablis | Central European Time | -01:00 |
| Basildon Chadstone | Eastern Australia Time | -09:00 |
| Basildon Chae Ramae | Indochina Time | -06:00 |
| Basildon Chagford | United Kingdom Time | 00:00 |
| Basildon Chakpachuria | India Standard Time | -04:30 |
| Basildon Chalong | Indochina Time | -06:00 |
| Basildon Cabudare | Venezuela Time | 05:00 |
| Basildon Cabrils | Central European Time | -01:00 |
| Basildon Cabramatta | Eastern Australia Time | -09:00 |
| Basildon Cabrerets | Central European Time | -01:00 |
| Basildon Cabo de Gata | Central European Time | -01:00 |
| Basildon Cadalso | Central European Time | -01:00 |
| Basildon Cadalso de los Vidrios | Central European Time | -01:00 |
| Basildon Cadereyta Jiménez | Central Time | 06:00 |
| Basildon Cabazon | Pacific Time | 08:00 |
| Basildon Cabarete | Atlantic Time | 05:00 |
| Basildon Byrdstown | Central Time | 06:00 |
| Basildon Byrnihat | India Standard Time | -04:30 |
| Basildon Byron | Eastern Time | 05:00 |
| Basildon Byron Bay | Eastern Australia Time | -09:00 |
| Basildon Bytča | Central European Time | -01:00 |
| Basildon Byford | Western Australia Time | -07:00 |