| New Hartford Tirukazhukundram | India Standard Time | -09:30 |
| New Hartford Zillah | Pacific Time | 03:00 |
| New Hartford Tirumakudalu Narasipura | India Standard Time | -09:30 |
| New Hartford Zirakpur | India Standard Time | -09:30 |
| New Hartford Tirupattur | India Standard Time | -09:30 |
| New Hartford Zofingen | Central European Time | -06:00 |
| New Hartford Tintagel | United Kingdom Time | -05:00 |
| New Hartford Zollikerberg | Central European Time | -06:00 |
| New Hartford Tipton | Eastern Time | 00:00 |
| New Hartford Tipp City | Eastern Time | 00:00 |
| New Hartford Taipa | China Time | -12:00 |
| New Hartford Taizhou | China Time | -12:00 |
| New Hartford Taito | Japan Time | -13:00 |
| New Hartford Taitō-ku | Japan Time | -13:00 |
| New Hartford Tahoe City | Pacific Time | 03:00 |
| New Hartford Tägerwilen | Central European Time | -06:00 |
| New Hartford Takengon | Western Indonesia Time | -11:00 |
| New Hartford Zuidhorn | Central European Time | -06:00 |
| New Hartford Zuidoostbeemster | Central European Time | -06:00 |
| New Hartford Zugliano | Central European Time | -06:00 |
| New Hartford Zoutelande | Central European Time | -06:00 |
| New Hartford Wyomissing | Eastern Time | 00:00 |
| New Hartford Wyong | Eastern Australia Time | -14:00 |
| New Hartford Wynn Vale | Central Australia Time | -13:30 |
| New Hartford Wynnewood | Eastern Time | 00:00 |
| New Hartford Wynyard | Eastern Australia Time | -14:00 |
| New Hartford Xaxim | Brasilia Time | -01:00 |
| New Hartford Wythall | United Kingdom Time | -05:00 |
| New Hartford Wytheville | Eastern Time | 00:00 |
| New Hartford Xaafuun | East Africa Time | -07:00 |
| New Hartford Xàbia | Central European Time | -06:00 |
| New Hartford Xalapa | Central Time | 01:00 |
| New Hartford Xalapa Enríquez | Central Time | 01:00 |
| New Hartford Xalisco | Mexican Pacific Time | 02:00 |
| New Hartford Zürs | Central European Time | -06:00 |
| New Hartford Zwiefalten | Central European Time | -06:00 |
| New Hartford Zweisimmen | Central European Time | -06:00 |
| New Hartford Zwingenberg | Central European Time | -06:00 |