• September 6 – The
Victoria (
nau Vittoria), one of the surviving ships of the
Magellan expedition, returns to
Sanlúcar de Barrameda in Spain under the command of
Juan Sebastián Elcano, becoming the first ship to
circumnavigate the world. It carries the first (dead) examples of the
bird-of-paradise ever to be seen in Europe. Venetian cardinal
Gasparo Contarini, in Spain at this time, is the first European to give a correct explanation of the one-day discrepancy in dates observed by the crew on their return. ==Mathematics==