| Fort Irwin Kettleman City | Pacific Time | 00:00 |
| Fort Irwin Saint-Georges-sur-Meuse | Central European Time | -09:00 |
| Fort Irwin Penrith | Eastern Australia Time | -17:00 |
| Fort Irwin Bangkok | Indochina Time | -14:00 |
| Fort Irwin Rosemount | Eastern Australia Time | -17:00 |
| Fort Irwin Bukit Beruang | Malaysia Time | -15:00 |
| Fort Irwin Poovarani | India Standard Time | -12:30 |
| Fort Irwin Ayer Baloi | Malaysia Time | -15:00 |
| Fort Irwin Illueca | Central European Time | -09:00 |
| Fort Irwin Saint Helena | Pacific Time | 00:00 |
| Fort Irwin Penrith | United Kingdom Time | -08:00 |
| Fort Irwin Bangkok | Indochina Time | -14:00 |
| Fort Irwin Rosendal | Central European Time | -09:00 |
| Fort Irwin Bukit Kayu Hitam | Malaysia Time | -15:00 |
| Fort Irwin Pool | United Kingdom Time | -08:00 |
| Fort Irwin Ayer Keroh | Malaysia Time | -15:00 |
| Fort Irwin Imboden | Central Time | -02:00 |
| Fort Irwin Saint-Hubert | Central European Time | -09:00 |
| Fort Irwin Penteli | Eastern European Time | -10:00 |
| Fort Irwin Banff | Mountain Time | -01:00 |
| Fort Irwin Rosendale | Eastern Time | -03:00 |
| Fort Irwin Belmore | Eastern Australia Time | -17:00 |
| Fort Irwin Pampatar | Venezuela Time | -03:00 |
| Fort Irwin Ayer's Cliff | Eastern Time | -03:00 |
| Fort Irwin Immenstadt | Central European Time | -09:00 |
| Fort Irwin Saint-Gilles | Central European Time | -09:00 |
| Fort Irwin Penwortham | United Kingdom Time | -08:00 |
| Fort Irwin Bandon | Pacific Time | 00:00 |
| Fort Irwin Rontana | Central European Time | -09:00 |
| Fort Irwin Belmont | Western Australia Time | -15:00 |
| Fort Irwin Pamukkale | Turkey Time | -10:00 |
| Fort Irwin Ayia Napa | Eastern European Time | -10:00 |
| Fort Irwin Jhikli Ambwari | India Standard Time | -12:30 |
| Fort Irwin Saint-Gobain | Central European Time | -09:00 |
| Fort Irwin Oromocto | Atlantic Time | -04:00 |
| Fort Irwin Ascot Vale | Eastern Australia Time | -17:00 |
| Fort Irwin Roppenheim | Central European Time | -09:00 |
| Fort Irwin Bembla and Manarah | Central European Time | -08:00 |
| Fort Irwin Panania | Eastern Australia Time | -17:00 |
| Fort Irwin Ay | Central European Time | -09:00 |
| Fort Irwin Jette | Central European Time | -09:00 |
| Fort Irwin Saint Julian's | Central European Time | -09:00 |
| Fort Irwin Orono | Central Time | -02:00 |
| Fort Irwin Asendorf | Central European Time | -09:00 |
| Fort Irwin Roquebrune-Cap-Martin | Central European Time | -09:00 |
| Fort Irwin Benahavís | Central European Time | -09:00 |
| Fort Irwin Panama City Beach | Central Time | -02:00 |
| Fort Irwin Axapusco | Central Time | -02:00 |
| Fort Irwin Jettingen-Scheppach | Central European Time | -09:00 |
| Fort Irwin Saint-Just-Saint-Rambert | Central European Time | -09:00 |