| Caloocan Pismo Beach | Pacific Time | 15:00 |
| Caloocan Pass Christian | Central Time | 13:00 |
| Caloocan Pitlochry | United Kingdom Time | 07:00 |
| Caloocan Pathiyavaram | India Standard Time | 02:30 |
| Caloocan Pithari | Eastern European Time | 05:00 |
| Caloocan Patho | Eastern Australia Time | -02:00 |
| Caloocan Oberbüren | Central European Time | 06:00 |
| Caloocan Pattaya | Indochina Time | 01:00 |
| Caloocan Oaxaca | Central Time | 13:00 |
| Caloocan Patterdale | United Kingdom Time | 07:00 |
| Caloocan Oamaru | New Zealand Time | -04:00 |
| Caloocan Orangeburg | Eastern Time | 12:00 |
| Caloocan Oaklands Park | Central Australia Time | -01:30 |
| Caloocan Orange Park | Eastern Time | 12:00 |
| Caloocan Oberwesel | Central European Time | 06:00 |
| Caloocan Opatija | Central European Time | 06:00 |
| Caloocan Oberstaufen | Central European Time | 06:00 |
| Caloocan Oostkapelle | Central European Time | 06:00 |
| Caloocan Obertrubach | Central European Time | 06:00 |
| Caloocan Ooltewah | Eastern Time | 12:00 |
| Caloocan Oberhausen-Rheinhausen | Central European Time | 06:00 |
| Caloocan Oosterbeek | Central European Time | 06:00 |
| Caloocan Oberkorn | Central European Time | 06:00 |
| Caloocan Opfikon | Central European Time | 06:00 |
| Caloocan Oberlin | Eastern Time | 12:00 |
| Caloocan Onești | Eastern European Time | 05:00 |
| Caloocan Obernberg am Brenner | Central European Time | 06:00 |
| Caloocan Ondara | Central European Time | 06:00 |
| Caloocan Oak Hill | Eastern Time | 12:00 |
| Caloocan Onhaye | Central European Time | 06:00 |
| Caloocan Oak Island | Eastern Time | 12:00 |
| Caloocan Wolverton | United Kingdom Time | 07:00 |
| Caloocan Oakdale | United Kingdom Time | 07:00 |
| Caloocan Wolfschlugen | Central European Time | 06:00 |
| Caloocan Oakdale | Pacific Time | 15:00 |
| Caloocan Wolfville | Atlantic Time | 11:00 |
| Caloocan Oakham | United Kingdom Time | 07:00 |
| Caloocan Wolkersdorf im Weinviertel | Central European Time | 06:00 |
| Caloocan Oakhurst | Pacific Time | 15:00 |
| Caloocan Wommelgem | Central European Time | 06:00 |
| Caloocan Oak Park Heights | Central Time | 13:00 |
| Caloocan Woodbridge | Eastern Time | 12:00 |
| Caloocan Oak Bluffs | Eastern Time | 12:00 |
| Caloocan Woodbridge Township | Eastern Time | 12:00 |
| Caloocan Oak Brook | Central Time | 13:00 |
| Caloocan Woodcroft | Central Australia Time | -01:30 |
| Caloocan Oud-Heverlee | Central European Time | 06:00 |
| Caloocan Wohratal | Central European Time | 06:00 |
| Caloocan Oud-Turnhout | Central European Time | 06:00 |
| Caloocan Wivenhoe | United Kingdom Time | 07:00 |