| Ardross Court-St.-Etienne | Central European Time | 06:00 |
| Ardross Courmayeur | Central European Time | 06:00 |
| Ardross Coulter | United Kingdom Time | 07:00 |
| Ardross Cottonwood | Mountain Time | 15:00 |
| Ardross Covington | Central Time | 13:00 |
| Ardross Cowaramup | Western Australia Time | 00:00 |
| Ardross Cozumel | Eastern Time | 13:00 |
| Ardross Chilmark | Eastern Time | 12:00 |
| Ardross Chiloquin | Pacific Time | 15:00 |
| Ardross Chimney Rock | Eastern Time | 12:00 |
| Ardross Chimgan | Uzbekistan Time | 03:00 |
| Ardross Cape Town | South Africa Standard Time | 06:00 |
| Ardross Cape Town | South Africa Standard Time | 06:00 |
| Ardross Capel Saint Mary | United Kingdom Time | 07:00 |
| Ardross Capileira | Central European Time | 06:00 |
| Ardross Capilla del Monte | Argentina Time | 11:00 |
| Ardross Capitol Heights | Eastern Time | 12:00 |
| Ardross Capitola | Pacific Time | 15:00 |
| Ardross Capraia E Limite | Central European Time | 06:00 |
| Ardross Chippewa Falls | Central Time | 13:00 |
| Ardross Chipping Campden | United Kingdom Time | 07:00 |
| Ardross Chipping Norton | Eastern Australia Time | -02:00 |
| Ardross Chinon | Central European Time | 06:00 |
| Ardross Canyonville | Pacific Time | 15:00 |
| Ardross Canyon | Central Time | 13:00 |
| Ardross Caorle | Central European Time | 06:00 |
| Ardross Capanne | Central European Time | 06:00 |
| Ardross Cape Breton | Atlantic Time | 11:00 |
| Ardross Canena | Central European Time | 06:00 |
| Ardross Candolim | India Standard Time | 02:30 |
| Ardross Canfield | Eastern Time | 12:00 |
| Ardross Cangey | Central European Time | 06:00 |
| Ardross Canley Heights | Eastern Australia Time | -02:00 |
| Ardross Canley Vale | Eastern Australia Time | -02:00 |
| Ardross Canmore | Mountain Time | 14:00 |
| Ardross Cannington | Western Australia Time | 00:00 |
| Ardross Cannington | Eastern Time | 12:00 |
| Ardross Cannon Air Force Base | Mountain Time | 14:00 |