| Houston Thirroul | Eastern Australia Time | -17:00 |
| Houston Westmead | Eastern Australia Time | -17:00 |
| Houston Thornbury | United Kingdom Time | -06:00 |
| Houston Weston Subedge | United Kingdom Time | -06:00 |
| Houston Thornleigh | Eastern Australia Time | -17:00 |
| Houston Westville | South Africa Standard Time | -08:00 |
| Houston Thoothukudi | India Standard Time | -11:30 |
| Houston Wetaskiwin | Mountain Time | 01:00 |
| Houston Thoppur | India Standard Time | -11:30 |
| Houston Zermatt | Central European Time | -07:00 |
| Houston Thorley | United Kingdom Time | -06:00 |
| Houston Zephyr | Eastern Time | -01:00 |
| Houston Thodupuzha | India Standard Time | -11:30 |
| Houston Zephyrhills | Eastern Time | -01:00 |
| Houston Uintah | Mountain Time | 01:00 |
| Houston Zandhoven | Central European Time | -07:00 |
| Houston Ujire | India Standard Time | -11:30 |
| Houston Zanzibar Town | East Africa Time | -09:00 |
| Houston Ukai | India Standard Time | -11:30 |
| Houston Zeven | Central European Time | -07:00 |
| Houston Ulladulla | Eastern Australia Time | -17:00 |
| Houston Zero Branco | Central European Time | -07:00 |
| Houston Ulcinj | Central European Time | -07:00 |
| Houston Ullur | India Standard Time | -11:30 |
| Houston Ulmen | Central European Time | -07:00 |
| Houston Ulrichsberg | Central European Time | -07:00 |
| Houston Ulundurpet | India Standard Time | -11:30 |
| Houston Ulverston | United Kingdom Time | -06:00 |
| Houston Ulverstone | Eastern Australia Time | -17:00 |
| Houston Tigkaki | Eastern European Time | -08:00 |
| Houston Tielt-Winge | Central European Time | -07:00 |
| Houston Tierra Blanca | Central Time | 00:00 |
| Houston Ticheville | Central European Time | -07:00 |
| Houston Tibau do Sul | Brasilia Time | -03:00 |
| Houston Zürs | Central European Time | -07:00 |
| Houston Zweisimmen | Central European Time | -07:00 |
| Houston Zwingenberg | Central European Time | -07:00 |
| Houston Zwiefalten | Central European Time | -07:00 |