When did the 1755 Lisbon earthquake occur?

The Lisbon earthquake occurred on 1 November 1755 and is estimated at around magnitude 8.5 to 9.0. It caused widespread destruction in Lisbon, followed by fires and a tsunami that hit the Portuguese coast and parts of the Atlantic. The disaster killed tens of thousands of people and deeply influenced European thought about nature, religion, and science. It is often cited as one of the most important natural disasters in the history of modern Europe.