| Cosmopolis Wangara | Western Australia Time | -15:00 |
| Cosmopolis Webbers Falls | Central Time | -02:00 |
| Cosmopolis Wanguri | Central Australia Time | -16:30 |
| Cosmopolis Webster | Central Time | -02:00 |
| Cosmopolis Wareham | Eastern Time | -03:00 |
| Cosmopolis Woodend | Eastern Australia Time | -17:00 |
| Cosmopolis Wappingers Falls | Eastern Time | -03:00 |
| Cosmopolis Woodfin | Eastern Time | -03:00 |
| Cosmopolis Warana | Eastern Australia Time | -17:00 |
| Cosmopolis Woodford | Eastern Australia Time | -17:00 |
| Cosmopolis Warburton | Eastern Australia Time | -17:00 |
| Cosmopolis Woods Cross | Mountain Time | -01:00 |
| Cosmopolis Warner | Eastern Time | -03:00 |
| Cosmopolis Woodinville | Pacific Time | 00:00 |
| Cosmopolis Windsor | Eastern Australia Time | -17:00 |
| Cosmopolis Woody Point | Eastern Australia Time | -17:00 |
| Cosmopolis Windsor | Eastern Australia Time | -17:00 |
| Cosmopolis Woolloongabba | Eastern Australia Time | -17:00 |
| Cosmopolis Winnsboro | Central Time | -02:00 |
| Cosmopolis Worrigee | Eastern Australia Time | -17:00 |
| Cosmopolis Wingham | United Kingdom Time | -08:00 |
| Cosmopolis Wörrstadt | Central European Time | -09:00 |
| Cosmopolis Windsor Locks | Eastern Time | -03:00 |
| Cosmopolis Wrightsville | Eastern Time | -03:00 |
| Cosmopolis Wommelgem | Central European Time | -09:00 |
| Cosmopolis Wrightsville Beach | Eastern Time | -03:00 |
| Cosmopolis Woodbridge | Eastern Time | -03:00 |
| Cosmopolis Worb | Central European Time | -09:00 |
| Cosmopolis Woodbridge Township | Eastern Time | -03:00 |
| Cosmopolis Workum | Central European Time | -09:00 |
| Cosmopolis Woodcroft | Central Australia Time | -16:30 |
| Cosmopolis Zuidhorn | Central European Time | -09:00 |
| Cosmopolis Zuidoostbeemster | Central European Time | -09:00 |
| Cosmopolis Zugliano | Central European Time | -09:00 |
| Cosmopolis Zürs | Central European Time | -09:00 |
| Cosmopolis Zweisimmen | Central European Time | -09:00 |
| Cosmopolis Zwingenberg | Central European Time | -09:00 |
| Cosmopolis Zwiefalten | Central European Time | -09:00 |