| Fort Irwin Visakhapatnam Port | India Standard Time | -12:30 |
| Fort Irwin Punchbowl | Eastern Australia Time | -17:00 |
| Fort Irwin Vila Flores | Brasilia Time | -04:00 |
| Fort Irwin East Greenwich | Eastern Time | -03:00 |
| Fort Irwin Concord | Eastern Australia Time | -17:00 |
| Fort Irwin Tha Ta Khro | Indochina Time | -14:00 |
| Fort Irwin Stellarton | Atlantic Time | -04:00 |
| Fort Irwin Tauriano | Central European Time | -09:00 |
| Fort Irwin Union Gap | Pacific Time | 00:00 |
| Fort Irwin Revesby | Eastern Australia Time | -17:00 |
| Fort Irwin Vijapadi | India Standard Time | -12:30 |
| Fort Irwin Earlston | United Kingdom Time | -08:00 |
| Fort Irwin Conneaut | Eastern Time | -03:00 |
| Fort Irwin Tha Hin | Indochina Time | -14:00 |
| Fort Irwin Steinbach | Central European Time | -09:00 |
| Fort Irwin Tavanur | India Standard Time | -12:30 |
| Fort Irwin Umm Al Arais | Central European Time | -08:00 |
| Fort Irwin Punganur | India Standard Time | -12:30 |
| Fort Irwin Vieux-Mareuil | Central European Time | -09:00 |
| Fort Irwin Earlton | Eastern Time | -03:00 |
| Fort Irwin Conifer | Mountain Time | -01:00 |
| Fort Irwin Thailavaram | India Standard Time | -12:30 |
| Fort Irwin Steinfeld | Central European Time | -09:00 |
| Fort Irwin South Brighton | Central Australia Time | -16:30 |
| Fort Irwin Umhlanga | South Africa Standard Time | -09:00 |
| Fort Irwin Pune | India Standard Time | -12:30 |
| Fort Irwin Tolland | Eastern Time | -03:00 |
| Fort Irwin Earley | United Kingdom Time | -08:00 |
| Fort Irwin Conshohocken | Eastern Time | -03:00 |
| Fort Irwin Sunbury | Eastern Time | -03:00 |
| Fort Irwin Stephenville | Newfoundland Time | -04:30 |
| Fort Irwin South Daytona | Eastern Time | -03:00 |
| Fort Irwin Umpqua | Pacific Time | 00:00 |
| Fort Irwin Pune | India Standard Time | -12:30 |
| Fort Irwin Tolo | Eastern European Time | -10:00 |
| Fort Irwin Easebourne | United Kingdom Time | -08:00 |
| Fort Irwin Constantine | United Kingdom Time | -08:00 |
| Fort Irwin Warners Bay | Eastern Australia Time | -17:00 |
| Fort Irwin Steelville | Central Time | -02:00 |
| Fort Irwin Tarrytown | Eastern Time | -03:00 |
| Fort Irwin Ulundurpet | India Standard Time | -12:30 |
| Fort Irwin Pune | India Standard Time | -12:30 |
| Fort Irwin Tomball | Central Time | -02:00 |
| Fort Irwin East Angus | Eastern Time | -03:00 |
| Fort Irwin Conthey | Central European Time | -09:00 |
| Fort Irwin Ventnor City | Eastern Time | -03:00 |
| Fort Irwin Staveley | United Kingdom Time | -08:00 |
| Fort Irwin Tartus | Eastern European Time | -10:00 |
| Fort Irwin Ulverston | United Kingdom Time | -08:00 |
| Fort Irwin Pune | India Standard Time | -12:30 |