The Vision Of Pope Leo XIII October 13, 1884 Exactly 33 years to the day prior to the great Miracle of the Sun in Fatima, that is, on October 13, 1884, Pope Leo XIII had a remarkable vision. When the aged Pontiff had finished celebrating Mass in his private Vatican Chapel, attended by a few Cardinals and members of the Vatican staff, he suddenly stopped at the foot of the altar. He stood there f..