| Fort Irwin Mülheim (Moselle) | Central European Time | -09:00 |
| Fort Irwin Dalat | Indochina Time | -14:00 |
| Fort Irwin Schwalbach am Taunus | Central European Time | -09:00 |
| Fort Irwin Seri Kembangan | Malaysia Time | -15:00 |
| Fort Irwin Mulhouse | Central European Time | -09:00 |
| Fort Irwin Skudai | Malaysia Time | -15:00 |
| Fort Irwin Schwandorf | Central European Time | -09:00 |
| Fort Irwin Caraz | Peru Time | -02:00 |
| Fort Irwin New Delhi | India Standard Time | -12:30 |
| Fort Irwin Dale | Central Time | -02:00 |
| Fort Irwin Schuylerville | Eastern Time | -03:00 |
| Fort Irwin Seri Manjung | Malaysia Time | -15:00 |
| Fort Irwin New Delhi | India Standard Time | -12:30 |
| Fort Irwin Smiths Falls | Eastern Time | -03:00 |
| Fort Irwin Schwaigern | Central European Time | -09:00 |
| Fort Irwin Carbis Bay | United Kingdom Time | -08:00 |
| Fort Irwin New Delhi | India Standard Time | -12:30 |
| Fort Irwin Dakar | Greenwich Mean Time | -07:00 |
| Fort Irwin Schöndorf | Central European Time | -09:00 |
| Fort Irwin Serdang | Malaysia Time | -15:00 |
| Fort Irwin Much Marcle | United Kingdom Time | -08:00 |
| Fort Irwin Smithfield | Eastern Time | -03:00 |
| Fort Irwin Schofield | Central Time | -02:00 |
| Fort Irwin Caraíva | Brasilia Time | -04:00 |
| Fort Irwin Muang | Indochina Time | -14:00 |
| Fort Irwin Dalhousie | India Standard Time | -12:30 |
| Fort Irwin Schongau | Central European Time | -09:00 |
| Fort Irwin Sequim | Pacific Time | 00:00 |
| Fort Irwin Mueang Udon Thani | Indochina Time | -14:00 |
| Fort Irwin Smethwick | United Kingdom Time | -08:00 |
| Fort Irwin Schrecksbach | Central European Time | -09:00 |
| Fort Irwin Chippewa Falls | Central Time | -02:00 |
| Fort Irwin Muene Luanda | West Africa Time | -08:00 |
| Fort Irwin Daito | Japan Time | -16:00 |
| Fort Irwin Schiermonnikoog | Central European Time | -09:00 |
| Fort Irwin Seoul | Korean Time | -16:00 |
| Fort Irwin Mueang | Indochina Time | -14:00 |
| Fort Irwin Sneem | Ireland Time | -08:00 |
| Fort Irwin Schiffdorf | Central European Time | -09:00 |
| Fort Irwin Chipping Campden | United Kingdom Time | -08:00 |
| Fort Irwin Schinveld | Central European Time | -09:00 |
| Fort Irwin Dahlonega | Eastern Time | -03:00 |
| Fort Irwin Schliersee | Central European Time | -09:00 |
| Fort Irwin Seoul | Korean Time | -16:00 |
| Fort Irwin Schlatt bei Diessenhofen | Central European Time | -09:00 |
| Fort Irwin Skagway | Alaska Time | 01:00 |
| Fort Irwin Schleiz | Central European Time | -09:00 |
| Fort Irwin Chipping Norton | Eastern Australia Time | -17:00 |
| Fort Irwin Scherpenheuvel-Zichem | Central European Time | -09:00 |
| Fort Irwin Daimes | Central European Time | -09:00 |