| Colombo Chuo | Japan Time | -03:30 |
| Colombo Sunbury | Eastern Time | 09:30 |
| Colombo Tingalpa | Eastern Australia Time | -04:30 |
| Colombo Cidade Ocidental | Brasilia Time | 08:30 |
| Colombo Tintagel | United Kingdom Time | 04:30 |
| Colombo Ciney | Central European Time | 03:30 |
| Colombo Tipton | Eastern Time | 09:30 |
| Colombo Circleville | Eastern Time | 09:30 |
| Colombo Tipp City | Eastern Time | 09:30 |
| Colombo Cimadolmo | Central European Time | 03:30 |
| Colombo Tirumangalam | India Standard Time | 00:00 |
| Colombo Cifuentes | Central European Time | 03:30 |
| Colombo Tirukazhukundram | India Standard Time | 00:00 |
| Colombo Tirumakudalu Narasipura | India Standard Time | 00:00 |
| Colombo Tirschenreuth | Central European Time | 03:30 |
| Colombo Tiruchendur | India Standard Time | 00:00 |
| Colombo Tarfaya | Western European Time | 04:30 |
| Colombo Tillsonburg | Eastern Time | 09:30 |
| Colombo Tilasar | India Standard Time | 00:00 |
| Colombo Tinajo | Western European Time | 04:30 |
| Colombo Timmins | Eastern Time | 09:30 |
| Colombo Tivoli | Eastern Time | 09:30 |
| Colombo Titwala | India Standard Time | 00:00 |
| Colombo Tisbury | Eastern Time | 09:30 |
| Colombo Titisee-Neustadt | Central European Time | 03:30 |
| Colombo Tirupattur | India Standard Time | 00:00 |
| Colombo Twinstead | United Kingdom Time | 04:30 |
| Colombo tx. Hương Thủy | Indochina Time | -01:30 |
| Colombo Tybee Island | Eastern Time | 09:30 |
| Colombo Tweed Heads | Eastern Australia Time | -04:30 |
| Colombo Tweed Heads South | Eastern Australia Time | -04:30 |
| Colombo Tutuhan | Chamorro Standard Time | -04:30 |
| Colombo Tuscola | Central Time | 10:30 |
| Colombo Tusmore | Central Australia Time | -04:00 |
| Colombo Tanjung Bungah | Malaysia Time | -02:30 |
| Colombo Tanjung Kling | Malaysia Time | -02:30 |
| Colombo Tanjung Malim | Malaysia Time | -02:30 |
| Colombo Tankara | India Standard Time | 00:00 |
| Colombo Tannersville | Eastern Time | 09:30 |
| Colombo Tanjung Rambutan | Malaysia Time | -02:30 |
| Colombo Tanjong Malim | Malaysia Time | -02:30 |
| Colombo Tarascon | Central European Time | 03:30 |
| Colombo Tappahannock | Eastern Time | 09:30 |
| Colombo Tanzania | Greenwich Mean Time | 05:30 |
| Colombo Taormina | Central European Time | 03:30 |
| Colombo Strafford | Eastern Time | 09:30 |
| Colombo Strangford | United Kingdom Time | 04:30 |
| Colombo Strassen | Central European Time | 03:30 |
| Colombo Strasburg | Eastern Time | 09:30 |
| Colombo Street | United Kingdom Time | 04:30 |