Blessed John XXIII

Today is the feast day of Blessed John the 23rd, who was the Pope who called for the Second Vatican Council, one of the most important events in the Catholic Church in many centuries.

The first session of the Second Vatican Council began on October 11, 1962.  While this linked article -which will give you more information about Good Pope John -lists his feast day as June 3 (the date of his death), October 11 is obviously also linked to him for the obvious association with Vatican 2.

(Once he's canonized in April, 2104, we'll see what the official, official date is!)