| Irving Tiruchendur | India Standard Time | -10:30 |
| Irving Saint Julian's | Central European Time | -07:00 |
| Irving West Richmond | Central Australia Time | -14:30 |
| Irving Saint-Just-Saint-Rambert | Central European Time | -07:00 |
| Irving Tirupattur | India Standard Time | -10:30 |
| Irving Saint-Joseph-de-Beauce | Eastern Time | -01:00 |
| Irving West Runton | United Kingdom Time | -06:00 |
| Irving Saint-Joseph-du-Lac | Eastern Time | -01:00 |
| Irving Zoutelande | Central European Time | -07:00 |
| Irving Saint Johns | Eastern Time | -01:00 |
| Irving West Ryde | Eastern Australia Time | -15:00 |
| Irving Saint John | Central Time | 00:00 |
| Irving Zuidhorn | Central European Time | -07:00 |
| Irving Saint-Hubert | Central European Time | -07:00 |
| Irving West Monroe | Central Time | 00:00 |
| Irving Xuzhou | China Time | -13:00 |
| Irving Zuidoostbeemster | Central European Time | -07:00 |
| Irving Xuchang | China Time | -13:00 |
| Irving West Nyack | Eastern Time | -01:00 |
| Irving Yaliyuru | India Standard Time | -10:30 |
| Irving Zugliano | Central European Time | -07:00 |
| Irving Yallabatharra | Western Australia Time | -13:00 |
| Irving West Park | Eastern Time | -01:00 |
| Irving Yallambie | Eastern Australia Time | -15:00 |
| Irving Zürs | Central European Time | -07:00 |
| Irving West Milwaukee | Central Time | 00:00 |
| Irving Zwingenberg | Central European Time | -07:00 |
| Irving West Melbourne | Eastern Australia Time | -15:00 |
| Irving Zwiefalten | Central European Time | -07:00 |
| Irving West Mackay | Eastern Australia Time | -15:00 |
| Irving Zweisimmen | Central European Time | -07:00 |
| Irving Zephyr | Eastern Time | -01:00 |
| Irving Zephyrhills | Eastern Time | -01:00 |
| Irving Zanzibar Town | East Africa Time | -08:00 |
| Irving Zandhoven | Central European Time | -07:00 |
| Irving Zermatt | Central European Time | -07:00 |
| Irving Zero Branco | Central European Time | -07:00 |
| Irving Zeven | Central European Time | -07:00 |