| Martinsville Xaafuun | East Africa Time | -07:00 |
| Martinsville Zanzibar Town | East Africa Time | -07:00 |
| Martinsville Xàbia | Central European Time | -06:00 |
| Martinsville Xalapa | Central Time | 01:00 |
| Martinsville Xalapa Enríquez | Central Time | 01:00 |
| Martinsville Xalisco | Mexican Pacific Time | 02:00 |
| Martinsville Wrightsville | Eastern Time | 00:00 |
| Martinsville Wrightsville Beach | Eastern Time | 00:00 |
| Martinsville Worrigee | Eastern Australia Time | -14:00 |
| Martinsville Wörrstadt | Central European Time | -06:00 |
| Martinsville Woy Woy | Eastern Australia Time | -14:00 |
| Martinsville Worb | Central European Time | -06:00 |
| Martinsville Workum | Central European Time | -06:00 |
| Martinsville Wang Maprang Nuea | Indochina Time | -11:00 |
| Martinsville Wangara | Western Australia Time | -12:00 |
| Martinsville Wamego | Central Time | 01:00 |
| Martinsville Wanaka | New Zealand Time | -16:00 |
| Martinsville Wandiligong | Eastern Australia Time | -14:00 |
| Martinsville Walzbachtal | Central European Time | -06:00 |
| Martinsville Wappingers Falls | Eastern Time | 00:00 |
| Martinsville Warana | Eastern Australia Time | -14:00 |
| Martinsville Wanguri | Central Australia Time | -13:30 |
| Martinsville Woodend | Eastern Australia Time | -14:00 |
| Martinsville Woodfin | Eastern Time | 00:00 |
| Martinsville Woodford | Eastern Australia Time | -14:00 |
| Martinsville Wareham | Eastern Time | 00:00 |
| Martinsville Warburton | Eastern Australia Time | -14:00 |
| Martinsville Warner | Eastern Time | 00:00 |
| Martinsville Woodinville | Pacific Time | 03:00 |
| Martinsville Woods Cross | Mountain Time | 02:00 |
| Martinsville Woody Point | Eastern Australia Time | -14:00 |
| Martinsville Woolloongabba | Eastern Australia Time | -14:00 |
| Martinsville Zillah | Pacific Time | 03:00 |
| Martinsville Zirakpur | India Standard Time | -09:30 |
| Martinsville Zikhron Ya'akov | Israel Time | -07:00 |
| Martinsville Zhongshan | China Time | -12:00 |
| Martinsville Zofingen | Central European Time | -06:00 |
| Martinsville Zollikerberg | Central European Time | -06:00 |