| Ulaanbaatar Pithari | Eastern European Time | 05:00 |
| Ulaanbaatar Kota Belud | Malaysia Time | 00:00 |
| Ulaanbaatar Pismo Beach | Pacific Time | 15:00 |
| Ulaanbaatar Kota Bharu | Malaysia Time | 00:00 |
| Ulaanbaatar Zillah | Pacific Time | 15:00 |
| Ulaanbaatar Kota Kinabalu | Malaysia Time | 00:00 |
| Ulaanbaatar Zirakpur | India Standard Time | 02:30 |
| Ulaanbaatar Kota Marudu | Malaysia Time | 00:00 |
| Ulaanbaatar Zollikerberg | Central European Time | 06:00 |
| Ulaanbaatar Kothav | India Standard Time | 02:30 |
| Ulaanbaatar Zofingen | Central European Time | 06:00 |
| Ulaanbaatar Kottarakkara | India Standard Time | 02:30 |
| Ulaanbaatar Koto | Japan Time | -01:00 |
| Ulaanbaatar Kotobi | Greenwich Mean Time | 08:00 |
| Ulaanbaatar Kotor | Central European Time | 06:00 |
| Ulaanbaatar Kotor Varoš | Central European Time | 06:00 |
| Ulaanbaatar Kottiyam | India Standard Time | 02:30 |
| Ulaanbaatar Kovalam | India Standard Time | 02:30 |
| Ulaanbaatar Kelantan | Western Indonesia Time | 01:00 |
| Ulaanbaatar Kelawade | India Standard Time | 02:30 |
| Ulaanbaatar Kelibia | Central European Time | 07:00 |
| Ulaanbaatar Keilor East | Eastern Australia Time | -02:00 |
| Ulaanbaatar Keith | United Kingdom Time | 07:00 |
| Ulaanbaatar Keeranur | India Standard Time | 02:30 |
| Ulaanbaatar Kebili | West Africa Time | 07:00 |
| Ulaanbaatar Jinzhou | China Time | 00:00 |
| Ulaanbaatar København | Central European Time | 06:00 |
| Ulaanbaatar København | Central European Time | 06:00 |
| Ulaanbaatar København | Central European Time | 06:00 |
| Ulaanbaatar København | Central European Time | 06:00 |
| Ulaanbaatar Keaau | Hawaii-Aleutian Time | 18:00 |
| Ulaanbaatar Kazhakkoottam | India Standard Time | 02:30 |
| Ulaanbaatar Kazhipathur | India Standard Time | 02:30 |
| Ulaanbaatar Jhikli Ambwari | India Standard Time | 02:30 |
| Ulaanbaatar Jim Thorpe | Eastern Time | 12:00 |
| Ulaanbaatar Jinan | China Time | 00:00 |
| Ulaanbaatar Jindalee | Eastern Australia Time | -02:00 |
| Ulaanbaatar Jindivick | Eastern Australia Time | -02:00 |