November 1, 451
The Council of Chalcedon (in modern Turkey) adjourns. The fourth and largest of all the ancient councils, attended by between 500 and 600 bishops, it repudiated the Eutychian heresy (that Christ has one nature, not two) and drew up a Christological statement of faith now known as the Definition of Chalcedon

November 1, 1512
After four years of work, Michelangelo Buonarroti unveils his 5,800-square-foot painting on the ceiling of the Vatican’s Sistine Chapel.

November 1, 1776
Spanish Franciscan missionaries found San Juan Capistrano Mission in California, one of 21 missions founded in the region between 1769 and 1823

November 1, 1950
Pope Pius XII releases his “Munificentissimus Deus,” proclaiming the “Assumption of the Blessed Virgin Mary.” The doctrine teaches that Mary was taken in body and soul into heaven at the end of her life. The belief was first propounded in Christian circles by Gregory of Tours in the late 500s.

[from ChristianHistory.net]