| Settle Pictou | Atlantic Time | 04:00 |
| Settle Piddlehinton | United Kingdom Time | 00:00 |
| Settle Prosser | Pacific Time | 08:00 |
| Settle Progreso | Eastern Time | 06:00 |
| Settle Progreso | Central Time | 06:00 |
| Settle Profondeville | Central European Time | -01:00 |
| Settle Prineville | Pacific Time | 08:00 |
| Settle Princes Town | Atlantic Time | 05:00 |
| Settle Princeton | Eastern Time | 05:00 |
| Settle Pineville | Eastern Time | 05:00 |
| Settle Pinehurst | Eastern Time | 05:00 |
| Settle Pincourt | Eastern Time | 05:00 |
| Settle Pinamar | Argentina Time | 04:00 |
| Settle Pine Bush | Eastern Time | 05:00 |
| Settle Oberbüren | Central European Time | -01:00 |
| Settle Oberkorn | Central European Time | -01:00 |
| Settle Oberlin | Eastern Time | 05:00 |
| Settle Obernberg am Brenner | Central European Time | -01:00 |
| Settle Oberwesel | Central European Time | -01:00 |
| Settle Oberstaufen | Central European Time | -01:00 |
| Settle Obertrubach | Central European Time | -01:00 |
| Settle Oberhausen-Rheinhausen | Central European Time | -01:00 |
| Settle Oak Hill | Eastern Time | 05:00 |
| Settle Oak Bluffs | Eastern Time | 05:00 |
| Settle Oak Brook | Central Time | 06:00 |
| Settle Oakdale | United Kingdom Time | 00:00 |
| Settle Oakdale | Pacific Time | 08:00 |
| Settle Oakham | United Kingdom Time | 00:00 |
| Settle Oakhurst | Pacific Time | 08:00 |
| Settle Oak Island | Eastern Time | 05:00 |
| Settle Oak Park Heights | Central Time | 06:00 |
| Settle Oaxaca | Central Time | 06:00 |
| Settle Oaklands Park | Central Australia Time | -08:30 |
| Settle Oamaru | New Zealand Time | -11:00 |
| Settle Ottignies-Louvain-la-Neuve | Central European Time | -01:00 |
| Settle Ottawa | Eastern Time | 05:00 |
| Settle Otompan | Central Time | 06:00 |
| Settle Otopeni | Eastern European Time | -02:00 |
| Settle Othello | Pacific Time | 08:00 |
| Settle Otočec | Central European Time | -01:00 |
| Settle Ota | Japan Time | -08:00 |
| Settle Oulton | United Kingdom Time | 00:00 |
| Settle Ouled Teima Amzou | Western European Time | 00:00 |
| Settle Ouled Fares | Central European Time | 00:00 |
| Settle Oud-Heverlee | Central European Time | -01:00 |
| Settle Oud-Turnhout | Central European Time | -01:00 |
| Settle Wrightsville | Eastern Time | 05:00 |
| Settle Wrightsville Beach | Eastern Time | 05:00 |
| Settle Woy Woy | Eastern Australia Time | -09:00 |
| Settle Workum | Central European Time | -01:00 |