« All EventsU.S. Air Force DaySeptember 18, 2027« Mason Patterson’s BirthdayAortic Dissection Awareness Day »Mark your calendar: September 18, 2027 is U.S. Air Force Day. However you observe it, make it a good one. Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Share:FacebookXWhatsAppThreadsTextMore… Details Date: September 18, 2027 Event Tags:DidYouKnow, GeneralHolidays, WhatzToday