| Surabaya Wilderswil | Central European Time | 06:00 |
| Surabaya Wickham | United Kingdom Time | 07:00 |
| Surabaya Wickham Bishops | United Kingdom Time | 07:00 |
| Surabaya Wicklow | Ireland Time | 07:00 |
| Surabaya Widnau | Central European Time | 06:00 |
| Surabaya Whitefish | Mountain Time | 14:00 |
| Surabaya Whiteman Air Force Base | Central Time | 13:00 |
| Surabaya Whitesboro | Eastern Time | 12:00 |
| Surabaya Whiteville | Eastern Time | 12:00 |
| Surabaya Whitewater | Central Time | 13:00 |
| Surabaya Whitney | Central Time | 13:00 |
| Surabaya Yedthady | India Standard Time | 01:30 |
| Surabaya Yasmine Hammamet | Central European Time | 06:00 |
| Surabaya Yarra Junction | Eastern Australia Time | -04:00 |
| Surabaya Yarralumla | Eastern Australia Time | -04:00 |
| Surabaya Yarraville | Eastern Australia Time | -04:00 |
| Surabaya Yarine | Eastern European Time | 05:00 |
| Surabaya Yanbian | China Time | -01:00 |
| Surabaya Yandina | Eastern Australia Time | -03:00 |
| Surabaya Yaliyuru | India Standard Time | 01:30 |
| Surabaya Yallabatharra | Western Australia Time | -01:00 |
| Surabaya Yallambie | Eastern Australia Time | -04:00 |
| Surabaya Wynn Vale | Central Australia Time | -03:30 |
| Surabaya Wynnewood | Eastern Time | 12:00 |
| Surabaya Wynyard | Eastern Australia Time | -04:00 |
| Surabaya Wyomissing | Eastern Time | 12:00 |
| Surabaya Wyong | Eastern Australia Time | -04:00 |
| Surabaya Wythall | United Kingdom Time | 07:00 |
| Surabaya Wytheville | Eastern Time | 12:00 |
| Surabaya Xaafuun | East Africa Time | 04:00 |
| Surabaya Xàbia | Central European Time | 06:00 |
| Surabaya Xaxim | Brasilia Time | 10:00 |
| Surabaya Xalapa | Central Time | 13:00 |
| Surabaya Xalapa Enríquez | Central Time | 13:00 |
| Surabaya Xalisco | Mexican Pacific Time | 14:00 |
| Surabaya Wrightsville | Eastern Time | 12:00 |
| Surabaya Wrightsville Beach | Eastern Time | 12:00 |
| Surabaya Woody Point | Eastern Australia Time | -03:00 |
| Surabaya Woolloongabba | Eastern Australia Time | -03:00 |
| Surabaya Worb | Central European Time | 06:00 |
| Surabaya Workum | Central European Time | 06:00 |
| Surabaya Worrigee | Eastern Australia Time | -04:00 |
| Surabaya Wörrstadt | Central European Time | 06:00 |
| Surabaya Woy Woy | Eastern Australia Time | -04:00 |
| Surabaya Xiangxi | China Time | -01:00 |
| Surabaya Xuchang | China Time | -01:00 |
| Surabaya Xuzhou | China Time | -01:00 |
| Surabaya Zuidhorn | Central European Time | 06:00 |
| Surabaya Zuidoostbeemster | Central European Time | 06:00 |
| Surabaya Zugliano | Central European Time | 06:00 |