834 1st All Hallows Eve (Halloween) observed to honor the saints.
475 Romulus Augustulus was proclaimed Western Roman Emperor. His deposition by Odoacer in 476 traditionally marks the end of the Western Roman Empire, the fall of ancient Rome, and the beginning of the Middle Ages in Western Europe.
1517 Protestant Reformation: Martin Luther published his 95 theses on the door of the Castle Church in Wittenberg, sparking the Protestant Reformation.
1541 Michelangelo Buonarroti finishes painting The Last Judgment in the Sistine Chapel, Vatican