| Ulaanbaatar Oberbüren | Central European Time | 06:00 |
| Ulaanbaatar La Joya | Central Time | 13:00 |
| Ulaanbaatar Oberhausen-Rheinhausen | Central European Time | 06:00 |
| Ulaanbaatar Clemson | Eastern Time | 12:00 |
| Ulaanbaatar Oaxaca | Central Time | 13:00 |
| Ulaanbaatar La Cassa | Central European Time | 06:00 |
| Ulaanbaatar Oamaru | New Zealand Time | -04:00 |
| Ulaanbaatar Cleobury Mortimer | United Kingdom Time | 07:00 |
| Ulaanbaatar Oberstaufen | Central European Time | 06:00 |
| Ulaanbaatar La Bisbal d'Empordà | Central European Time | 06:00 |
| Ulaanbaatar Obertrubach | Central European Time | 06:00 |
| Ulaanbaatar Clerques | Central European Time | 06:00 |
| Ulaanbaatar Oberwesel | Central European Time | 06:00 |
| Ulaanbaatar Clervaux | Central European Time | 06:00 |
| Ulaanbaatar Oberkorn | Central European Time | 06:00 |
| Ulaanbaatar Carovigno | Central European Time | 06:00 |
| Ulaanbaatar Oberlin | Eastern Time | 12:00 |
| Ulaanbaatar Carpinteria | Pacific Time | 15:00 |
| Ulaanbaatar Obernberg am Brenner | Central European Time | 06:00 |
| Ulaanbaatar Carrouge | Central European Time | 06:00 |
| Ulaanbaatar Oak Bluffs | Eastern Time | 12:00 |
| Ulaanbaatar Casaletto Ceredano | Central European Time | 06:00 |
| Ulaanbaatar Oak Brook | Central Time | 13:00 |
| Ulaanbaatar Casale Marittimo | Central European Time | 06:00 |
| Ulaanbaatar Oakdale | United Kingdom Time | 07:00 |
| Ulaanbaatar Carvoeiro | Western European Time | 07:00 |
| Ulaanbaatar Oakdale | Pacific Time | 15:00 |
| Ulaanbaatar Caselle Torinese | Central European Time | 06:00 |
| Ulaanbaatar Oakham | United Kingdom Time | 07:00 |
| Ulaanbaatar Caslano | Central European Time | 06:00 |
| Ulaanbaatar Oakhurst | Pacific Time | 15:00 |
| Ulaanbaatar Cassà de la Selva | Central European Time | 06:00 |
| Ulaanbaatar Oaklands Park | Central Australia Time | -01:30 |
| Ulaanbaatar Casillas | Central European Time | 06:00 |
| Ulaanbaatar Oak Park Heights | Central Time | 13:00 |
| Ulaanbaatar Fulbourn | United Kingdom Time | 07:00 |
| Ulaanbaatar Oak Hill | Eastern Time | 12:00 |
| Ulaanbaatar Fulchur | India Standard Time | 02:30 |
| Ulaanbaatar Oak Island | Eastern Time | 12:00 |
| Ulaanbaatar Funes | Argentina Time | 11:00 |
| Ulaanbaatar Funes | Central European Time | 06:00 |
| Ulaanbaatar Fürstenzell | Central European Time | 06:00 |
| Ulaanbaatar Füssen | Central European Time | 06:00 |
| Ulaanbaatar Fushimi Ward | Japan Time | -01:00 |
| Ulaanbaatar Granbury | Central Time | 13:00 |
| Ulaanbaatar Granby | Mountain Time | 14:00 |
| Ulaanbaatar Gabicce Monte | Central European Time | 06:00 |
| Ulaanbaatar Fuhlsbüttel | Central European Time | 06:00 |
| Ulaanbaatar Fujairah | Gulf Standard Time | 04:00 |
| Ulaanbaatar Fuenmayor | Central European Time | 06:00 |