| Kolkata Kothav | India Standard Time | 00:00 |
| Kolkata Koto | Japan Time | -03:30 |
| Kolkata Kotobi | Greenwich Mean Time | 05:30 |
| Kolkata Kotor | Central European Time | 03:30 |
| Kolkata Kotor Varoš | Central European Time | 03:30 |
| Kolkata Johns Island | Eastern Time | 09:30 |
| Kolkata Jojutla de Juárez | Central Time | 10:30 |
| Kolkata Jonesborough | Eastern Time | 09:30 |
| Kolkata Jonestown | Central Time | 10:30 |
| Kolkata Jonesville | Eastern Time | 09:30 |
| Kolkata Joshua Tree | Pacific Time | 12:30 |
| Kolkata Jordan | Central Time | 10:30 |
| Kolkata Joondalup | Western Australia Time | -02:30 |
| Kolkata Kelantan | Western Indonesia Time | -01:30 |
| Kolkata Kelawade | India Standard Time | 00:00 |
| Kolkata Keeranur | India Standard Time | 00:00 |
| Kolkata Kebili | West Africa Time | 04:30 |
| Kolkata København | Central European Time | 03:30 |
| Kolkata København | Central European Time | 03:30 |
| Kolkata København | Central European Time | 03:30 |
| Kolkata København | Central European Time | 03:30 |
| Kolkata Keaau | Hawaii-Aleutian Time | 15:30 |
| Kolkata Kazhakkoottam | India Standard Time | 00:00 |
| Kolkata Kazhipathur | India Standard Time | 00:00 |
| Kolkata Junagadh district | India Standard Time | 00:00 |
| Kolkata Kelibia | Central European Time | 04:30 |
| Kolkata Keilor East | Eastern Australia Time | -04:30 |
| Kolkata Keith | United Kingdom Time | 04:30 |
| Kolkata Kelshi | India Standard Time | 00:00 |
| Kolkata Kelso | Eastern Australia Time | -04:30 |
| Kolkata Kelso | United Kingdom Time | 04:30 |
| Kolkata Kelsterbach | Central European Time | 03:30 |
| Kolkata Kelston | United Kingdom Time | 04:30 |
| Kolkata Kelvin Grove | Eastern Australia Time | -04:30 |
| Kolkata Kemah | Central Time | 10:30 |
| Kolkata Kemberg | Central European Time | 03:30 |
| Kolkata Kelmarsh | United Kingdom Time | 04:30 |
| Kolkata Kemptville | Eastern Time | 09:30 |