| Summerside Te Anau | New Zealand Time | -15:00 |
| Summerside Wanguri | Central Australia Time | -12:30 |
| Summerside Te Awamutu | New Zealand Time | -15:00 |
| Summerside Wamego | Central Time | 02:00 |
| Summerside Tealby | United Kingdom Time | -04:00 |
| Summerside Wanaka | New Zealand Time | -15:00 |
| Summerside Team Valley Trading Estate | United Kingdom Time | -04:00 |
| Summerside Wandiligong | Eastern Australia Time | -13:00 |
| Summerside Tekonsha | Eastern Time | 01:00 |
| Summerside Walzbachtal | Central European Time | -05:00 |
| Summerside Tel Mond | Israel Time | -06:00 |
| Summerside Waltenhofen | Central European Time | -05:00 |
| Summerside Teisendorf | Central European Time | -05:00 |
| Summerside Wals | Central European Time | -05:00 |
| Summerside Tehachapi | Pacific Time | 04:00 |
| Summerside Wallisellen | Central European Time | -05:00 |
| Summerside Tekapo | New Zealand Time | -15:00 |
| Summerside Walled Lake | Eastern Time | 01:00 |
| Summerside Zachary | Central Time | 02:00 |
| Summerside Waliv | India Standard Time | -08:30 |
| Summerside Zahara de los Atunes | Central European Time | -05:00 |
| Summerside Waldkirchen | Central European Time | -05:00 |
| Summerside Yvoir | Central European Time | -05:00 |
| Summerside Walenstadt | Central European Time | -05:00 |
| Summerside Yzeure | Central European Time | -05:00 |
| Summerside Warner | Eastern Time | 01:00 |
| Summerside Yunquera de Henares | Central European Time | -05:00 |
| Summerside Xiangxi | China Time | -11:00 |
| Summerside Yuo | West Africa Time | -04:00 |
| Summerside Wappingers Falls | Eastern Time | 01:00 |
| Summerside Warana | Eastern Australia Time | -13:00 |
| Summerside Wareham | Eastern Time | 01:00 |
| Summerside Warburton | Eastern Australia Time | -13:00 |
| Summerside Xuzhou | China Time | -11:00 |
| Summerside Xuchang | China Time | -11:00 |
| Summerside Yaliyuru | India Standard Time | -08:30 |
| Summerside Yallabatharra | Western Australia Time | -11:00 |
| Summerside Yallambie | Eastern Australia Time | -13:00 |