| Rīga Kennett | Central Time | 08:00 |
| Rīga Kensington | Eastern Australia Time | -07:00 |
| Rīga Kenmare | Ireland Time | 02:00 |
| Rīga Kengalkempohalli | India Standard Time | -02:30 |
| Rīga Keralassery | India Standard Time | -02:30 |
| Rīga Kenton | Eastern Time | 07:00 |
| Rīga Kotara | Eastern Australia Time | -07:00 |
| Rīga Kota Kinabalu | Malaysia Time | -05:00 |
| Rīga Kota Marudu | Malaysia Time | -05:00 |
| Rīga Kota Belud | Malaysia Time | -05:00 |
| Rīga Kota Bharu | Malaysia Time | -05:00 |
| Rīga Kothav | India Standard Time | -02:30 |
| Rīga Koto | Japan Time | -06:00 |
| Rīga Kotobi | Greenwich Mean Time | 03:00 |
| Rīga Kotor | Central European Time | 01:00 |
| Rīga Kotor Varoš | Central European Time | 01:00 |
| Rīga Kottiyam | India Standard Time | -02:30 |
| Rīga Kottarakkara | India Standard Time | -02:30 |
| Rīga Kovalam | India Standard Time | -02:30 |
| Rīga Keeranur | India Standard Time | -02:30 |
| Rīga Keilor East | Eastern Australia Time | -07:00 |
| Rīga Keith | United Kingdom Time | 02:00 |
| Rīga Kelantan | Western Indonesia Time | -04:00 |
| Rīga Kelawade | India Standard Time | -02:30 |
| Rīga Kebili | West Africa Time | 02:00 |
| Rīga Kazhakkoottam | India Standard Time | -02:30 |
| Rīga Kazhipathur | India Standard Time | -02:30 |
| Rīga Jinzhou | China Time | -05:00 |
| Rīga København | Central European Time | 01:00 |
| Rīga København | Central European Time | 01:00 |
| Rīga København | Central European Time | 01:00 |
| Rīga København | Central European Time | 01:00 |
| Rīga Keaau | Hawaii-Aleutian Time | 13:00 |
| Rīga Jhikli Ambwari | India Standard Time | -02:30 |
| Rīga Jim Thorpe | Eastern Time | 07:00 |
| Rīga Jinan | China Time | -05:00 |
| Rīga Jindalee | Eastern Australia Time | -07:00 |
| Rīga Jindivick | Eastern Australia Time | -07:00 |