| Southam Sumida | Japan Time | -08:00 |
| Southam Docklands | Eastern Australia Time | -10:00 |
| Southam Clifton Hill | Eastern Australia Time | -10:00 |
| Southam Dobbs Ferry | Eastern Time | 05:00 |
| Southam Summerland | Pacific Time | 08:00 |
| Southam Dabaspete | India Standard Time | -04:30 |
| Southam Cetona | Central European Time | -01:00 |
| Southam Cyberjaya | Malaysia Time | -07:00 |
| Southam West Hindmarsh | Central Australia Time | -09:30 |
| Southam Cygnet | Eastern Australia Time | -10:00 |
| Southam Clayton South | Eastern Australia Time | -10:00 |
| Southam Cunit | Central European Time | -01:00 |
| Southam West Kempsey | Eastern Australia Time | -10:00 |
| Southam Cuorgnè | Central European Time | -01:00 |
| Southam Clayton | Eastern Time | 05:00 |
| Southam Curral Velho | Cape Verde Time | 02:00 |
| Southam West Kirby | United Kingdom Time | 00:00 |
| Southam Currans Hill | Eastern Australia Time | -10:00 |
| Southam Cle Elum | Pacific Time | 08:00 |
| Southam City of Orange | Eastern Time | 05:00 |
| Southam West Footscray | Eastern Australia Time | -10:00 |
| Southam City of Industry | Pacific Time | 08:00 |
| Southam Clear Lake | Central Time | 06:00 |
| Southam Ciudad de la Costa | Uruguay Time | 04:00 |
| Southam West End | Central Time | 07:00 |
| Southam Ciudad de México | Central Time | 07:00 |
| Southam Český Krumlov | Central European Time | -01:00 |
| Southam Ciudad Colón | Central Time | 07:00 |
| Southam West Milwaukee | Central Time | 06:00 |
| Southam Ciudad General Escobedo | Central Time | 07:00 |
| Southam Clawson | Eastern Time | 05:00 |
| Southam Castellamonte | Central European Time | -01:00 |
| Southam West Melbourne | Eastern Australia Time | -10:00 |
| Southam Castanet-Tolosan | Central European Time | -01:00 |
| Southam Clearwater | Eastern Time | 05:00 |
| Southam Cassis | Central European Time | -01:00 |
| Southam West Mackay | Eastern Australia Time | -09:00 |
| Southam Castagneto Carducci | Central European Time | -01:00 |
| Southam Clerques | Central European Time | -01:00 |
| Southam Casselman | Eastern Time | 05:00 |
| Southam West Lakes | Central Australia Time | -09:30 |
| Southam Castelsardo | Central European Time | -01:00 |
| Southam Clervaux | Central European Time | -01:00 |
| Southam Castelnau-de-Montmiral | Central European Time | -01:00 |
| Southam West Jakarta | Western Indonesia Time | -06:00 |
| Southam Città Sant'Angelo | Central European Time | -01:00 |
| Southam Clemson | Eastern Time | 05:00 |
| Southam Cittadella | Central European Time | -01:00 |
| Southam West Lorne | Eastern Time | 05:00 |
| Southam Cisnădioara | Eastern European Time | -02:00 |