| Fort Irwin Huntingdale | Western Australia Time | -15:00 |
| Fort Irwin Batu Feringghi | Malaysia Time | -15:00 |
| Fort Irwin Macduff | United Kingdom Time | -08:00 |
| Fort Irwin Standish | United Kingdom Time | -08:00 |
| Fort Irwin Browns Plains | Eastern Australia Time | -17:00 |
| Fort Irwin Eatonville | Pacific Time | 00:00 |
| Fort Irwin Bellbrook | Eastern Australia Time | -17:00 |
| Fort Irwin Gilcrux | United Kingdom Time | -08:00 |
| Fort Irwin Hurricane | Mountain Time | -01:00 |
| Fort Irwin Bauru | Brasilia Time | -04:00 |
| Fort Irwin Macedonia | Eastern Time | -03:00 |
| Fort Irwin Stanford | Pacific Time | 00:00 |
| Fort Irwin Caraíva | Brasilia Time | -04:00 |
| Fort Irwin Eastside | United Kingdom Time | -08:00 |
| Fort Irwin Belleair Bluffs | Eastern Time | -03:00 |
| Fort Irwin Gig Harbor | Pacific Time | 00:00 |
| Fort Irwin Húsavík | Greenwich Mean Time | -07:00 |
| Fort Irwin Baxter | Central Time | -02:00 |
| Fort Irwin Macherio | Central European Time | -09:00 |
| Fort Irwin Staines-upon-Thames | United Kingdom Time | -08:00 |
| Fort Irwin Cárcar | Central European Time | -09:00 |
| Fort Irwin Eastsound | Pacific Time | 00:00 |
| Fort Irwin Chepstow | United Kingdom Time | -08:00 |
| Fort Irwin Gilze | Central European Time | -09:00 |
| Fort Irwin Husborne Crawley | United Kingdom Time | -08:00 |
| Fort Irwin Birkdale | Eastern Australia Time | -17:00 |
| Fort Irwin Martigny | Central European Time | -09:00 |
| Fort Irwin Staré Město | Central European Time | -09:00 |
| Fort Irwin Caraz | Peru Time | -02:00 |
| Fort Irwin Edgartown | Eastern Time | -03:00 |
| Fort Irwin Chengdu | China Time | -15:00 |
| Fort Irwin Gillitts | South Africa Standard Time | -09:00 |
| Fort Irwin Hadleigh | United Kingdom Time | -08:00 |
| Fort Irwin Birkenau | Central European Time | -09:00 |
| Fort Irwin Martel | Central European Time | -09:00 |
| Fort Irwin Stari Grad | Central European Time | -09:00 |
| Fort Irwin Carbis Bay | United Kingdom Time | -08:00 |
| Fort Irwin Edgerton | Central Time | -02:00 |
| Fort Irwin Chennai | India Standard Time | -12:30 |
| Fort Irwin Gilmer | Central Time | -02:00 |
| Fort Irwin Hackettstown | Eastern Time | -03:00 |
| Fort Irwin Birkenfeld | Central European Time | -09:00 |
| Fort Irwin Martin | Central Time | -02:00 |
| Fort Irwin Starke | Eastern Time | -03:00 |
| Fort Irwin Choudrant | Central Time | -02:00 |
| Fort Irwin Edgewater | Eastern Time | -03:00 |
| Fort Irwin Chennai | India Standard Time | -12:30 |
| Fort Irwin Guildford | Eastern Australia Time | -17:00 |
| Fort Irwin Habarakada | India Standard Time | -12:30 |
| Fort Irwin Bioggio | Central European Time | -09:00 |