| Mannheim Threlkeld | United Kingdom Time | 01:00 |
| Mannheim Thriprayar | India Standard Time | -03:30 |
| Mannheim Thrissur | India Standard Time | -03:30 |
| Mannheim Thousand Palms | Pacific Time | 09:00 |
| Mannheim Thornbury | United Kingdom Time | 01:00 |
| Mannheim Thornleigh | Eastern Australia Time | -08:00 |
| Mannheim Thornton | Eastern Time | 06:00 |
| Mannheim Thodupuzha | India Standard Time | -03:30 |
| Mannheim Thiruverumbur | India Standard Time | -03:30 |
| Mannheim Thompsonville | Eastern Time | 06:00 |
| Mannheim Thong Nian | Indochina Time | -05:00 |
| Mannheim Thoothukudi | India Standard Time | -03:30 |
| Mannheim Thoppur | India Standard Time | -03:30 |
| Mannheim Thorley | United Kingdom Time | 01:00 |
| Mannheim Tielt-Winge | Central European Time | 00:00 |
| Mannheim Tierra Blanca | Central Time | 07:00 |
| Mannheim Ticheville | Central European Time | 00:00 |
| Mannheim Tibau do Sul | Brasilia Time | 05:00 |
| Mannheim Thung Song | Indochina Time | -05:00 |
| Mannheim Thuckalay | India Standard Time | -03:30 |
| Mannheim Thurso | United Kingdom Time | 01:00 |
| Mannheim Thusis | Central European Time | 00:00 |
| Mannheim Tianjin | China Time | -06:00 |
| Mannheim Unterseen | Central European Time | 00:00 |
| Mannheim Unthank | United Kingdom Time | 01:00 |
| Mannheim University Center | Eastern Time | 06:00 |
| Mannheim Tigkaki | Eastern European Time | -01:00 |
| Mannheim Universal City | Central Time | 07:00 |
| Mannheim Urbino | Central European Time | 00:00 |
| Mannheim Urakawa | Japan Time | -07:00 |
| Mannheim Uran Islampur | India Standard Time | -03:30 |
| Mannheim Upper Mount Gravatt | Eastern Australia Time | -08:00 |
| Mannheim Upper Moutere | New Zealand Time | -10:00 |
| Mannheim Upper Coomera | Eastern Australia Time | -08:00 |
| Mannheim Upper Darby | Eastern Time | 06:00 |
| Mannheim Upper Ferntree Gully | Eastern Australia Time | -08:00 |
| Mannheim Upland | Pacific Time | 09:00 |
| Mannheim Uppala | India Standard Time | -03:30 |