| Rostock Cadalso | Central European Time | 00:00 |
| Rostock Cadalso de los Vidrios | Central European Time | 00:00 |
| Rostock Cabudare | Venezuela Time | 05:00 |
| Rostock Cabrils | Central European Time | 00:00 |
| Rostock Cabazon | Pacific Time | 09:00 |
| Rostock Cabarete | Atlantic Time | 05:00 |
| Rostock Cabramatta | Eastern Australia Time | -10:00 |
| Rostock Cabrerets | Central European Time | 00:00 |
| Rostock Cabo de Gata | Central European Time | 00:00 |
| Rostock Byford | Western Australia Time | -07:00 |
| Rostock Byrdstown | Central Time | 07:00 |
| Rostock Byrnihat | India Standard Time | -04:30 |
| Rostock Byron | Eastern Time | 06:00 |
| Rostock Byron Bay | Eastern Australia Time | -10:00 |
| Rostock Bytča | Central European Time | 00:00 |
| Rostock Bogotá | Colombia Time | 06:00 |
| Rostock Boğazkent Belediyesi | Turkey Time | -02:00 |
| Rostock Bella Vista | Eastern Australia Time | -10:00 |
| Rostock Belgrade | Mountain Time | 08:00 |
| Rostock Belgrave | Eastern Australia Time | -10:00 |
| Rostock Belfort-du-Quercy | Central European Time | 00:00 |
| Rostock Belforte del Chienti | Central European Time | 00:00 |
| Rostock Bellbrook | Eastern Time | 06:00 |
| Rostock Bellbrook | Eastern Australia Time | -10:00 |
| Rostock Belleair Bluffs | Eastern Time | 06:00 |
| Rostock Boliqueime | Western European Time | 01:00 |
| Rostock Boksburg | South Africa Standard Time | -01:00 |
| Rostock Bondi Beach | Eastern Australia Time | -10:00 |
| Rostock Bondi Junction | Eastern Australia Time | -10:00 |
| Rostock Boppelsen | Central European Time | 00:00 |
| Rostock Boquete | Eastern Time | 06:00 |
| Rostock Booneville | Central Time | 07:00 |
| Rostock Boonville | Pacific Time | 09:00 |
| Rostock Boothbay | Eastern Time | 06:00 |
| Rostock Boothbay Harbor | Eastern Time | 06:00 |
| Rostock Bonlez | Central European Time | 00:00 |
| Rostock Bonnac | Central European Time | 00:00 |
| Rostock Bonifay | Central Time | 07:00 |