| Fort Irwin Bapas | India Standard Time | -12:30 |
| Fort Irwin Riba-roja d'Ebre | Central European Time | -09:00 |
| Fort Irwin Greystoke | United Kingdom Time | -08:00 |
| Fort Irwin Rawdon | United Kingdom Time | -08:00 |
| Fort Irwin San Andrés Cholula | Central Time | -02:00 |
| Fort Irwin Ribamar | Western European Time | -08:00 |
| Fort Irwin Veresegyház | Central European Time | -09:00 |
| Fort Irwin Banner Elk | Eastern Time | -03:00 |
| Fort Irwin Bar Harbor | Eastern Time | -03:00 |
| Fort Irwin Ribesalbes | Central European Time | -09:00 |
| Fort Irwin Greyton | South Africa Standard Time | -09:00 |
| Fort Irwin Rawang | Malaysia Time | -15:00 |
| Fort Irwin Shorewood | Central Time | -02:00 |
| Fort Irwin Rhinebeck | Eastern Time | -03:00 |
| Fort Irwin Yorktown Heights | Eastern Time | -03:00 |
| Fort Irwin Bang Phli Yai | Indochina Time | -14:00 |
| Fort Irwin Barboursville | Eastern Time | -03:00 |
| Fort Irwin Rhodes | Eastern European Time | -10:00 |
| Fort Irwin Grezzana | Central European Time | -09:00 |
| Fort Irwin Rathmines | Ireland Time | -08:00 |
| Fort Irwin Shortstanding | United Kingdom Time | -08:00 |
| Fort Irwin Rhos on Sea | United Kingdom Time | -08:00 |
| Fort Irwin Yoshinogari | Japan Time | -16:00 |
| Fort Irwin Banff | Mountain Time | -01:00 |
| Fort Irwin Barbizon | Central European Time | -09:00 |
| Fort Irwin Rheinsberg | Central European Time | -09:00 |
| Fort Irwin Grindelwald | Central European Time | -09:00 |
| Fort Irwin Ratoath | Ireland Time | -08:00 |
| Fort Irwin Shrirampur Rural | India Standard Time | -12:30 |
| Fort Irwin Prosser | Pacific Time | 00:00 |
| Fort Irwin Yodogawa Ward | Japan Time | -16:00 |
| Fort Irwin Bandon | Pacific Time | 00:00 |
| Fort Irwin Barcelona | Venezuela Time | -03:00 |
| Fort Irwin Providencia | Chile Time | -03:00 |
| Fort Irwin Grinnell | Central Time | -02:00 |
| Fort Irwin Ratsada | Indochina Time | -14:00 |
| Fort Irwin Side | Turkey Time | -10:00 |
| Fort Irwin Provincetown | Eastern Time | -03:00 |
| Fort Irwin Yermo | Pacific Time | 00:00 |
| Fort Irwin Atlantic Beach | Eastern Time | -03:00 |
| Fort Irwin Bardauni | India Standard Time | -12:30 |
| Fort Irwin Progreso | Eastern Time | -02:00 |
| Fort Irwin Grönland | Central European Time | -09:00 |
| Fort Irwin Rattenberg | Central European Time | -09:00 |
| Fort Irwin Side Belediyesi | Turkey Time | -10:00 |
| Fort Irwin Progreso | Central Time | -02:00 |
| Fort Irwin Yeroskipou | Eastern European Time | -10:00 |
| Fort Irwin Bangor | United Kingdom Time | -08:00 |
| Fort Irwin Bardez | India Standard Time | -12:30 |
| Fort Irwin Profondeville | Central European Time | -09:00 |