| Fort Irwin Solvang | Pacific Time | 00:00 |
| Fort Irwin Jindalee | Eastern Australia Time | -17:00 |
| Fort Irwin Madeira Beach | Eastern Time | -03:00 |
| Fort Irwin Wynyard | Eastern Australia Time | -17:00 |
| Fort Irwin Sirmione | Central European Time | -09:00 |
| Fort Irwin Pendle Hill | Eastern Australia Time | -17:00 |
| Fort Irwin Mackinaw | Central Time | -02:00 |
| Fort Irwin Tweed Heads | Eastern Australia Time | -17:00 |
| Fort Irwin Somanahalli | India Standard Time | -12:30 |
| Fort Irwin Jindivick | Eastern Australia Time | -17:00 |
| Fort Irwin Macksville | Eastern Australia Time | -17:00 |
| Fort Irwin Wythall | United Kingdom Time | -08:00 |
| Fort Irwin Steinbach | Central European Time | -09:00 |
| Fort Irwin Quakertown | Eastern Time | -03:00 |
| Fort Irwin Macquarie | Eastern Australia Time | -17:00 |
| Fort Irwin Tweed Heads South | Eastern Australia Time | -17:00 |
| Fort Irwin Swansboro | Eastern Time | -03:00 |
| Fort Irwin Jinan | China Time | -15:00 |
| Fort Irwin Macquarie Fields | Eastern Australia Time | -17:00 |
| Fort Irwin Wytheville | Eastern Time | -03:00 |
| Fort Irwin Steinfeld | Central European Time | -09:00 |
| Fort Irwin Qualicum Beach | Pacific Time | 00:00 |
| Fort Irwin Magdalena del Mar | Peru Time | -02:00 |
| Fort Irwin Thành phố Việt Trì | Indochina Time | -14:00 |
| Fort Irwin Swanage | United Kingdom Time | -08:00 |
| Fort Irwin Jinzhou | China Time | -15:00 |
| Fort Irwin Mafra | Western European Time | -08:00 |
| Fort Irwin Xaafuun | East Africa Time | -10:00 |
| Fort Irwin Staveley | United Kingdom Time | -08:00 |
| Fort Irwin Quanzhou | China Time | -15:00 |
| Fort Irwin Mae Sot | Indochina Time | -14:00 |
| Fort Irwin Thanipadi | India Standard Time | -12:30 |
| Fort Irwin Swaffham | United Kingdom Time | -08:00 |
| Fort Irwin Jhikli Ambwari | India Standard Time | -12:30 |
| Fort Irwin Mae Hia | Indochina Time | -14:00 |
| Fort Irwin Xàbia | Central European Time | -09:00 |
| Fort Irwin Steelville | Central Time | -02:00 |
| Fort Irwin Penteli | Eastern European Time | -10:00 |
| Fort Irwin Mae Na Wang | Indochina Time | -14:00 |
| Fort Irwin Tharston | United Kingdom Time | -08:00 |
| Fort Irwin Swaffham Bulbeck | United Kingdom Time | -08:00 |
| Fort Irwin Jette | Central European Time | -09:00 |
| Fort Irwin Magill | Central Australia Time | -16:30 |
| Fort Irwin Wyomissing | Eastern Time | -03:00 |
| Fort Irwin Stayner | Eastern Time | -03:00 |
| Fort Irwin Penrith | Eastern Australia Time | -17:00 |
| Fort Irwin Matheran | India Standard Time | -12:30 |
| Fort Irwin Thành phố Hòa Bình | Indochina Time | -14:00 |
| Fort Irwin Swainsthorpe | United Kingdom Time | -08:00 |
| Fort Irwin Jettingen-Scheppach | Central European Time | -09:00 |