| Youngstown Wohratal | Central European Time | -05:00 |
| Youngstown Wittenberg | Central European Time | -05:00 |
| Youngstown Wivenhoe | United Kingdom Time | -04:00 |
| Youngstown Wisconsin Dells | Central Time | 01:00 |
| Youngstown Zuidhorn | Central European Time | -05:00 |
| Youngstown Zuidoostbeemster | Central European Time | -05:00 |
| Youngstown Zugliano | Central European Time | -05:00 |
| Youngstown Zoutelande | Central European Time | -05:00 |
| Youngstown Zürs | Central European Time | -05:00 |
| Youngstown Zwingenberg | Central European Time | -05:00 |
| Youngstown Zwiefalten | Central European Time | -05:00 |
| Youngstown Zweisimmen | Central European Time | -05:00 |
| Youngstown Voorhees Township | Eastern Time | 00:00 |
| Youngstown Voroneț | Eastern European Time | -06:00 |
| Youngstown Vosselaar | Central European Time | -05:00 |
| Youngstown Vostochny District | Moscow Time | -07:00 |
| Youngstown Volterra | Central European Time | -05:00 |
| Youngstown Winton | New Zealand Time | -17:00 |
| Youngstown Winterville | Eastern Time | 00:00 |
| Youngstown Wirksworth | United Kingdom Time | -04:00 |
| Youngstown Wirsberg | Central European Time | -05:00 |
| Youngstown Winseler | Central European Time | -05:00 |
| Youngstown Winnsboro | Central Time | 01:00 |
| Youngstown Wingham | United Kingdom Time | -04:00 |
| Youngstown Windsor Locks | Eastern Time | 00:00 |
| Youngstown Windsor | Eastern Australia Time | -15:00 |
| Youngstown Windsor | Eastern Australia Time | -14:00 |
| Youngstown Volcano | Hawaii-Aleutian Time | 06:00 |
| Youngstown Vitthalapur | India Standard Time | -09:30 |
| Youngstown Union Gap | Pacific Time | 03:00 |
| Youngstown Visakhapatnam | India Standard Time | -09:30 |
| Youngstown Visakhapatnam Port | India Standard Time | -09:30 |
| Youngstown Umpqua | Pacific Time | 03:00 |
| Youngstown Unawatuna | India Standard Time | -09:30 |
| Youngstown Underwood | Eastern Australia Time | -14:00 |
| Youngstown Umm Al Arais | Central European Time | -05:00 |
| Youngstown Umhlanga | South Africa Standard Time | -06:00 |
| Youngstown Uintah | Mountain Time | 02:00 |
| Youngstown Ujire | India Standard Time | -09:30 |
| Youngstown Ukai | India Standard Time | -09:30 |
| Youngstown Ulcinj | Central European Time | -05:00 |
| Youngstown Ulladulla | Eastern Australia Time | -15:00 |
| Youngstown Ullur | India Standard Time | -09:30 |
| Youngstown Ulmen | Central European Time | -05:00 |
| Youngstown Ulrichsberg | Central European Time | -05:00 |
| Youngstown Ultimo | Eastern Australia Time | -15:00 |
| Youngstown Ulundurpet | India Standard Time | -09:30 |
| Youngstown Ulverston | United Kingdom Time | -04:00 |
| Youngstown Ulverstone | Eastern Australia Time | -15:00 |
| Youngstown Three Rivers | Eastern Time | 00:00 |