September 19

1846 – Two French shepherd children experience a "Marian apparition" (a reported supernatural appearance by Mary, the mother of religious figure Jesus) on a mountaintop in France.
1848 – Saturn's eighth moon, Hyperion, is discovered both in England and the U.S.
1976 – Two Imperial Iranian Air Force F-4 Phantom II jets fly out to investigate an unidentified flying object, when both independently lose instrumentation and communications as they approach, only to have them restored upon withdrawal.