| Potsdam Davos | Central European Time | -06:00 |
| Potsdam Dawalwadi | India Standard Time | -09:30 |
| Potsdam Davidson | Eastern Time | 00:00 |
| Potsdam Clute | Central Time | 01:00 |
| Potsdam Clusane | Central European Time | -06:00 |
| Potsdam Clyde | Eastern Australia Time | -14:00 |
| Potsdam Clyst Saint Mary | United Kingdom Time | -05:00 |
| Potsdam Coalinga | Pacific Time | 03:00 |
| Potsdam Coacalco de Berriozabal | Central Time | 01:00 |
| Potsdam Clonakilty | Ireland Time | -05:00 |
| Potsdam Clonmel | Ireland Time | -05:00 |
| Potsdam Clontarf | Ireland Time | -05:00 |
| Potsdam Clinton | Central Time | 01:00 |
| Potsdam Clifton Hill | Eastern Australia Time | -14:00 |
| Potsdam Cetona | Central European Time | -06:00 |
| Potsdam Clayton South | Eastern Australia Time | -14:00 |
| Potsdam Clayton | Eastern Time | 00:00 |
| Potsdam Cle Elum | Pacific Time | 03:00 |
| Potsdam Clear Lake | Central Time | 01:00 |
| Potsdam Český Krumlov | Central European Time | -06:00 |
| Potsdam Clawson | Eastern Time | 00:00 |
| Potsdam Clearwater | Eastern Time | 00:00 |
| Potsdam Clerques | Central European Time | -06:00 |
| Potsdam Clervaux | Central European Time | -06:00 |
| Potsdam Clemson | Eastern Time | 00:00 |
| Potsdam Cleobury Mortimer | United Kingdom Time | -05:00 |
| Potsdam Cene | Central European Time | -06:00 |
| Potsdam Cellefrouin | Central European Time | -06:00 |
| Potsdam Celano | Central European Time | -06:00 |
| Potsdam Celebration | Eastern Time | 00:00 |
| Potsdam Celina | Central Time | 01:00 |
| Potsdam Central City | Mountain Time | 02:00 |
| Potsdam Centralia | Eastern Time | 00:00 |
| Potsdam Central Jakarta | Western Indonesia Time | -11:00 |
| Potsdam Cervantes | Western Australia Time | -12:00 |
| Potsdam Cerovlje | Central European Time | -06:00 |
| Potsdam Cercedilla | Central European Time | -06:00 |
| Potsdam Céret | Central European Time | -06:00 |