| Mar del Plata Unthank | United Kingdom Time | -03:00 |
| Mar del Plata Upland | Pacific Time | 05:00 |
| Mar del Plata Universal City | Central Time | 03:00 |
| Mar del Plata University Center | Eastern Time | 02:00 |
| Mar del Plata Urmar Tanda | India Standard Time | -08:30 |
| Mar del Plata Urizar | Central European Time | -04:00 |
| Mar del Plata Urbino | Central European Time | -04:00 |
| Mar del Plata Urakawa | Japan Time | -12:00 |
| Mar del Plata Uran Islampur | India Standard Time | -08:30 |
| Mar del Plata Upper Coomera | Eastern Australia Time | -13:00 |
| Mar del Plata Upper Darby | Eastern Time | 02:00 |
| Mar del Plata Upper Ferntree Gully | Eastern Australia Time | -14:00 |
| Mar del Plata Upper Mount Gravatt | Eastern Australia Time | -13:00 |
| Mar del Plata Upper Moutere | New Zealand Time | -16:00 |
| Mar del Plata Uppala | India Standard Time | -08:30 |
| Mar del Plata Tillsonburg | Eastern Time | 02:00 |
| Mar del Plata Tilasar | India Standard Time | -08:30 |
| Mar del Plata Takengon | Western Indonesia Time | -10:00 |
| Mar del Plata Taizhou | China Time | -11:00 |
| Mar del Plata Taipa | China Time | -11:00 |
| Mar del Plata Taito | Japan Time | -12:00 |
| Mar del Plata Taitō-ku | Japan Time | -12:00 |
| Mar del Plata Tingalpa | Eastern Australia Time | -13:00 |
| Mar del Plata Timmins | Eastern Time | 02:00 |
| Mar del Plata Tinajo | Western European Time | -03:00 |
| Mar del Plata Tipp City | Eastern Time | 02:00 |
| Mar del Plata Tintagel | United Kingdom Time | -03:00 |
| Mar del Plata Tipton | Eastern Time | 02:00 |
| Mar del Plata Tirschenreuth | Central European Time | -04:00 |
| Mar del Plata Tiruchendur | India Standard Time | -08:30 |
| Mar del Plata Tirukazhukundram | India Standard Time | -08:30 |
| Mar del Plata Tirumakudalu Narasipura | India Standard Time | -08:30 |
| Mar del Plata Tirumangalam | India Standard Time | -08:30 |
| Mar del Plata Tirupattur | India Standard Time | -08:30 |
| Mar del Plata Tisbury | Eastern Time | 02:00 |
| Mar del Plata Tivoli | Eastern Time | 02:00 |
| Mar del Plata Titisee-Neustadt | Central European Time | -04:00 |
| Mar del Plata Titwala | India Standard Time | -08:30 |