Giovanni da Verrazzano sets sail westward from Madeira to find a sea route to the Pacific Ocean.

Giovanni da Verrazzano was an Italian explorer from the Republic of Florence, best known for his expedition to North America. He led most of his later missions, including the one to America, in the service of King Francis I of France.

Madeira, officially the Autonomous Region of Madeira, is an autonomous region of Portugal. It is an archipelago situated in the North Atlantic Ocean, in the region of Macaronesia, just under 400 kilometres (250 mi) north of the Canary Islands, Spain, 520 kilometres (320 mi) west of the Morocco and 805 kilometres (500 mi) southwest of mainland Portugal. Madeira sits on the African Tectonic Plate, but is culturally, politically and ethnically associated with Europe, with its population predominantly descended from Portuguese settlers. Its population was 251,060 in 2021. The capital of Madeira is Funchal, on the main island's south coast.

January 17 is the 17th day of the year in the Gregorian calendar; 348 days remain until the end of the year.