| Iași Valle de la Serena | Central European Time | 01:00 |
| Iași White City | Pacific Time | 10:00 |
| Iași White Hall | Central Time | 08:00 |
| Iași White Lake charter Township | Eastern Time | 07:00 |
| Iași Whitefish | Mountain Time | 09:00 |
| Iași Whiteman Air Force Base | Central Time | 08:00 |
| Iași Whitesboro | Eastern Time | 07:00 |
| Iași Whiteville | Eastern Time | 07:00 |
| Iași Whitewater | Central Time | 08:00 |
| Iași Whitby | United Kingdom Time | 02:00 |
| Iași Whitby | Eastern Time | 07:00 |
| Iași Whitchurch | United Kingdom Time | 02:00 |
| Iași Wheaton-Glenmont | Eastern Time | 07:00 |
| Iași Whalley | United Kingdom Time | 02:00 |
| Iași Whanganui | New Zealand Time | -09:00 |
| Iași Wheatley | Central Time | 08:00 |
| Iași Wetzikon | Central European Time | 01:00 |
| Iași Wetherill Park | Eastern Australia Time | -07:00 |
| Iași Weston Subedge | United Kingdom Time | 02:00 |
| Iași Wexford | Ireland Time | 02:00 |
| Iași Wexford | Eastern Time | 07:00 |
| Iași Westmead | Eastern Australia Time | -07:00 |
| Iași Westkapelle | Central European Time | 01:00 |
| Iași Westlake Village | Pacific Time | 10:00 |
| Iași Westville | South Africa Standard Time | 01:00 |
| Iași Wetaskiwin | Mountain Time | 09:00 |
| Iași Yeniçiftlik | Turkey Time | 00:00 |
| Iași Yenifoça | Turkey Time | 00:00 |
| Iași Yenda | Eastern Australia Time | -07:00 |
| Iași Yermo | Pacific Time | 10:00 |
| Iași Yeroskipou | Eastern European Time | 00:00 |
| Iași Yodogawa Ward | Japan Time | -06:00 |
| Iași Yorktown Heights | Eastern Time | 07:00 |
| Iași Yoxford | United Kingdom Time | 02:00 |
| Iași Ypres | Central European Time | 01:00 |
| Iași Yoshinogari | Japan Time | -06:00 |
| Iași Youngsville | Central Time | 08:00 |
| Iași Yountville | Pacific Time | 10:00 |