| Klerksdorp Willoughby | Eastern Australia Time | -08:00 |
| Klerksdorp Willisau | Central European Time | 00:00 |
| Klerksdorp Williston Park | Eastern Time | 06:00 |
| Klerksdorp Willits | Pacific Time | 09:00 |
| Klerksdorp Willaston | United Kingdom Time | 01:00 |
| Klerksdorp Wilkau-Haßlau | Central European Time | 00:00 |
| Klerksdorp Wilkesboro | Eastern Time | 06:00 |
| Klerksdorp Wildwood | Eastern Time | 06:00 |
| Klerksdorp Wiesbaden | Central European Time | 00:00 |
| Klerksdorp Wieselburg | Central European Time | 00:00 |
| Klerksdorp Virton | Central European Time | 00:00 |
| Klerksdorp Virginia | Central Time | 07:00 |
| Klerksdorp Whitney | Central Time | 07:00 |
| Klerksdorp Wilbraham | Eastern Time | 06:00 |
| Klerksdorp Wildau | Central European Time | 00:00 |
| Klerksdorp Wilder | Eastern Time | 06:00 |
| Klerksdorp Wilderswil | Central European Time | 00:00 |
| Klerksdorp Wickham | United Kingdom Time | 01:00 |
| Klerksdorp Wickham Bishops | United Kingdom Time | 01:00 |
| Klerksdorp Wicklow | Ireland Time | 01:00 |
| Klerksdorp Widnau | Central European Time | 00:00 |
| Klerksdorp Wilmington | Eastern Time | 06:00 |
| Klerksdorp Willows | Pacific Time | 09:00 |
| Klerksdorp Willunga | Central Australia Time | -07:30 |
| Klerksdorp Wilton Manors | Eastern Time | 06:00 |
| Klerksdorp Wiltz | Central European Time | 00:00 |
| Klerksdorp Winchcombe | United Kingdom Time | 01:00 |
| Klerksdorp Winchester | Eastern Time | 06:00 |
| Klerksdorp Windcrest | Central Time | 07:00 |
| Klerksdorp Windeck | Central European Time | 00:00 |
| Klerksdorp Winder | Eastern Time | 06:00 |
| Klerksdorp Windham | Eastern Time | 06:00 |
| Klerksdorp Zhongshan | China Time | -06:00 |
| Klerksdorp Zillah | Pacific Time | 09:00 |
| Klerksdorp Zikhron Ya'akov | Israel Time | -01:00 |
| Klerksdorp Zirakpur | India Standard Time | -03:30 |
| Klerksdorp Zollikerberg | Central European Time | 00:00 |
| Klerksdorp Zofingen | Central European Time | 00:00 |