| Fort Irwin Jamnagar | India Standard Time | -12:30 |
| Fort Irwin Sacramento | Pacific Time | 00:00 |
| Fort Irwin Aracaju | Brasilia Time | -04:00 |
| Fort Irwin Port Sudan | Central Africa Time | -09:00 |
| Fort Irwin Santa Fe | Argentina Time | -04:00 |
| Fort Irwin San Pedro Sula | Central Time | -01:00 |
| Fort Irwin Suez | Eastern European Time | -09:00 |
| Fort Irwin Dresden | Central European Time | -09:00 |
| Fort Irwin Tomsk | Tomsk Time | -14:00 |
| Fort Irwin Masina | West Africa Time | -08:00 |
| Fort Irwin Saharanpur | India Standard Time | -12:30 |
| Fort Irwin Gulbarga | India Standard Time | -12:30 |
| Fort Irwin Bhātpāra | India Standard Time | -12:30 |
| Fort Irwin Najaf | Arabian Time | -10:00 |
| Fort Irwin Feira de Santana | Brasilia Time | -04:00 |
| Fort Irwin Shah Alam | Malaysia Time | -15:00 |
| Fort Irwin Mariupol' | Eastern European Time | -10:00 |
| Fort Irwin Himeji | Japan Time | -16:00 |
| Fort Irwin Tuxtla Gutiérrez | Central Time | -02:00 |
| Fort Irwin Gomel | Moscow Time | -10:00 |
| Fort Irwin Okene | West Africa Time | -08:00 |
| Fort Irwin Uijeongbu-si | Korean Time | -16:00 |
| Fort Irwin East London | South Africa Standard Time | -09:00 |
| Fort Irwin Yazd | Iran Time | -11:30 |
| Fort Irwin Hargeisa | East Africa Time | -10:00 |
| Fort Irwin Siālkot | Pakistan Time | -12:00 |
| Fort Irwin Kemerovo | Novokuznetsk Time | -14:00 |
| Fort Irwin Yichang | China Time | -15:00 |
| Fort Irwin Hwaseong-si | Korean Time | -16:00 |
| Fort Irwin Kansas City | Central Time | -02:00 |
| Fort Irwin Cuautitlán Izcalli | Central Time | -02:00 |
| Fort Irwin Yinchuan | China Time | -15:00 |
| Fort Irwin Skopje | Central European Time | -09:00 |
| Fort Irwin Vereeniging | South Africa Standard Time | -09:00 |
| Fort Irwin The Hague | Central European Time | -09:00 |
| Fort Irwin Long Beach | Pacific Time | 00:00 |
| Fort Irwin Mixco | Central Time | -01:00 |
| Fort Irwin Lyon | Central European Time | -09:00 |
| Fort Irwin Londrina | Brasilia Time | -04:00 |
| Fort Irwin Mesa | Mountain Time | 00:00 |
| Fort Irwin Jiaojiangcun | China Time | -15:00 |
| Fort Irwin Matsudo | Japan Time | -16:00 |
| Fort Irwin Juiz de Fora | Brasilia Time | -04:00 |
| Fort Irwin Nishinomiya | Japan Time | -16:00 |
| Fort Irwin Tula | Moscow Time | -10:00 |
| Fort Irwin Borough of Staten Island | Eastern Time | -03:00 |
| Fort Irwin Kawaguchi | Japan Time | -16:00 |
| Fort Irwin Zunyi | China Time | -15:00 |
| Fort Irwin Jiaxing | China Time | -15:00 |
| Fort Irwin Belford Roxo | Brasilia Time | -04:00 |