| Fort Irwin West Kempsey | Eastern Australia Time | -17:00 |
| Fort Irwin Bioggio | Central European Time | -09:00 |
| Fort Irwin New Carrollton | Eastern Time | -03:00 |
| Fort Irwin Biougra | Western European Time | -08:00 |
| Fort Irwin Yunquera de Henares | Central European Time | -09:00 |
| Fort Irwin Bir Ali Ben Khlifa | Central European Time | -08:00 |
| Fort Irwin Barua P | India Standard Time | -12:30 |
| Fort Irwin Bir Tam Tam | Western European Time | -08:00 |
| Fort Irwin West Kirby | United Kingdom Time | -08:00 |
| Fort Irwin Birch Run | Eastern Time | -03:00 |
| Fort Irwin New Castle | Atlantic Time | -03:00 |
| Fort Irwin Birmingham | United Kingdom Time | -08:00 |
| Fort Irwin Yuo | West Africa Time | -08:00 |
| Fort Irwin Birmingham | United Kingdom Time | -08:00 |
| Fort Irwin Barranco District | Peru Time | -02:00 |
| Fort Irwin Birkdale | Eastern Australia Time | -17:00 |
| Fort Irwin West Footscray | Eastern Australia Time | -17:00 |
| Fort Irwin Birkenau | Central European Time | -09:00 |
| Fort Irwin New Buffalo | Eastern Time | -03:00 |
| Fort Irwin Birkenfeld | Central European Time | -09:00 |
| Fort Irwin Yvoir | Central European Time | -09:00 |
| Fort Irwin Bisbee | Mountain Time | 00:00 |
| Fort Irwin Barranquitas | Atlantic Time | -03:00 |
| Fort Irwin Biroda | India Standard Time | -12:30 |
| Fort Irwin West End | Central Time | -01:00 |
| Fort Irwin New Bagan | Myanmar Time | -13:30 |
| Fort Irwin Yzeure | Central European Time | -09:00 |
| Fort Irwin Barjols | Central European Time | -09:00 |
| Fort Irwin West Milwaukee | Central Time | -02:00 |
| Fort Irwin New Baltimore | Eastern Time | -03:00 |
| Fort Irwin Zachary | Central Time | -02:00 |
| Fort Irwin Barns Green | United Kingdom Time | -08:00 |
| Fort Irwin West Melbourne | Eastern Australia Time | -17:00 |
| Fort Irwin New Barnet | United Kingdom Time | -08:00 |
| Fort Irwin Zahara de los Atunes | Central European Time | -09:00 |
| Fort Irwin Barnagar | India Standard Time | -12:30 |
| Fort Irwin West Mackay | Eastern Australia Time | -17:00 |
| Fort Irwin Neuerburg | Central European Time | -09:00 |
| Fort Irwin Weaverville | Pacific Time | 00:00 |
| Fort Irwin Barnard Castle | United Kingdom Time | -08:00 |
| Fort Irwin West Lakes | Central Australia Time | -16:30 |
| Fort Irwin Neuhausen am Rheinfall | Central European Time | -09:00 |
| Fort Irwin Webbers Falls | Central Time | -02:00 |
| Fort Irwin Barnstable | Eastern Time | -03:00 |
| Fort Irwin West Jakarta | Western Indonesia Time | -14:00 |
| Fort Irwin Neuried | Central European Time | -09:00 |
| Fort Irwin Webster | Central Time | -02:00 |
| Fort Irwin Avon | United Kingdom Time | -08:00 |
| Fort Irwin West Lorne | Eastern Time | -03:00 |
| Fort Irwin Neuötting | Central European Time | -09:00 |