| Fort Irwin Baidani | India Standard Time | -12:30 |
| Fort Irwin Asangaon | India Standard Time | -12:30 |
| Fort Irwin West Point | Eastern Time | -03:00 |
| Fort Irwin Unthank | United Kingdom Time | -08:00 |
| Fort Irwin Baichanalli | India Standard Time | -12:30 |
| Fort Irwin Ashbourne | United Kingdom Time | -08:00 |
| Fort Irwin Akköy | Turkey Time | -10:00 |
| Fort Irwin Scottsboro | Central Time | -02:00 |
| Fort Irwin Baie-D'Urfe | Eastern Time | -03:00 |
| Fort Irwin Alcanar | Central European Time | -09:00 |
| Fort Irwin West Portsmouth | Eastern Time | -03:00 |
| Fort Irwin Universal City | Central Time | -02:00 |
| Fort Irwin Appenzell District | Central European Time | -09:00 |
| Fort Irwin Alconaba | Central European Time | -09:00 |
| Fort Irwin Akrotiri | Eastern European Time | -10:00 |
| Fort Irwin Scottsville | Central Time | -02:00 |
| Fort Irwin Apple Springs | Central Time | -02:00 |
| Fort Irwin Alcochete | Western European Time | -08:00 |
| Fort Irwin West Reading | Eastern Time | -03:00 |
| Fort Irwin University Center | Eastern Time | -03:00 |
| Fort Irwin Applecross | Western Australia Time | -15:00 |
| Fort Irwin Alexandria Bay | Eastern Time | -03:00 |
| Fort Irwin Al Hofuf | Arabian Time | -10:00 |
| Fort Irwin Sé | Western European Time | -08:00 |
| Fort Irwin Bahrain | Pakistan Time | -12:00 |
| Fort Irwin Alenquer | Western European Time | -08:00 |
| Fort Irwin West Richmond | Central Australia Time | -16:30 |
| Fort Irwin Upper Mount Gravatt | Eastern Australia Time | -17:00 |
| Fort Irwin Bahrs Scrub | Eastern Australia Time | -17:00 |
| Fort Irwin Alexander Heights | Western Australia Time | -15:00 |
| Fort Irwin Ardross | Western Australia Time | -15:00 |
| Fort Irwin Sea Isle City | Eastern Time | -03:00 |
| Fort Irwin Apollo Beach | Eastern Time | -03:00 |
| Fort Irwin Alfonso Lista | Philippine Time | -15:00 |
| Fort Irwin West Runton | United Kingdom Time | -08:00 |
| Fort Irwin Upper Moutere | New Zealand Time | -19:00 |
| Fort Irwin Aoulouz | Western European Time | -08:00 |
| Fort Irwin Alfornelos | Western European Time | -08:00 |
| Fort Irwin Ardsley | Eastern Time | -03:00 |
| Fort Irwin Scuol | Central European Time | -09:00 |
| Fort Irwin Aougrout | Central European Time | -08:00 |
| Fort Irwin Alger Centre | Central European Time | -08:00 |
| Fort Irwin West Ryde | Eastern Australia Time | -17:00 |
| Fort Irwin Upper Coomera | Eastern Australia Time | -17:00 |
| Fort Irwin Anzola dell'Emilia | Central European Time | -09:00 |
| Fort Irwin Algerias | Colombia Time | -02:00 |
| Fort Irwin Åre | Central European Time | -09:00 |
| Fort Irwin Seaford | Eastern Time | -03:00 |
| Fort Irwin Ao Nang | Indochina Time | -14:00 |
| Fort Irwin Algermissen | Central European Time | -09:00 |