| Thornton Zero Branco | Central European Time | -06:00 |
| Thornton Shenandoah | Central Time | 01:00 |
| Thornton Zeven | Central European Time | -06:00 |
| Thornton Woy Woy | Eastern Australia Time | -14:00 |
| Thornton Wrightsville | Eastern Time | 00:00 |
| Thornton Wrightsville Beach | Eastern Time | 00:00 |
| Thornton Wyomissing | Eastern Time | 00:00 |
| Thornton Wyong | Eastern Australia Time | -14:00 |
| Thornton Wynn Vale | Central Australia Time | -13:30 |
| Thornton Wynnewood | Eastern Time | 00:00 |
| Thornton Wynyard | Eastern Australia Time | -14:00 |
| Thornton Wythall | United Kingdom Time | -05:00 |
| Thornton Wytheville | Eastern Time | 00:00 |
| Thornton Xaafuun | East Africa Time | -07:00 |
| Thornton Xàbia | Central European Time | -06:00 |
| Thornton Xalapa | Central Time | 01:00 |
| Thornton Xalapa Enríquez | Central Time | 01:00 |
| Thornton Xalisco | Mexican Pacific Time | 02:00 |
| Thornton Xaxim | Brasilia Time | -01:00 |
| Thornton Wang Maprang Nuea | Indochina Time | -11:00 |
| Thornton Wangara | Western Australia Time | -12:00 |
| Thornton Wanguri | Central Australia Time | -13:30 |
| Thornton Warburton | Eastern Australia Time | -14:00 |
| Thornton Wareham | Eastern Time | 00:00 |
| Thornton Wappingers Falls | Eastern Time | 00:00 |
| Thornton Warana | Eastern Australia Time | -14:00 |
| Thornton Warner | Eastern Time | 00:00 |
| Thornton Woodinville | Pacific Time | 03:00 |
| Thornton Woodend | Eastern Australia Time | -14:00 |
| Thornton Woodfin | Eastern Time | 00:00 |
| Thornton Woodford | Eastern Australia Time | -14:00 |
| Thornton Woods Cross | Mountain Time | 02:00 |
| Thornton Worb | Central European Time | -06:00 |
| Thornton Woody Point | Eastern Australia Time | -14:00 |
| Thornton Woolloongabba | Eastern Australia Time | -14:00 |
| Thornton Workum | Central European Time | -06:00 |
| Thornton Worrigee | Eastern Australia Time | -14:00 |
| Thornton Wörrstadt | Central European Time | -06:00 |