Historic Event
Feb 24 Pope Gregory XIII announces New Style (Gregorian) calendar
- Mar 18 Prince William of Orange injured in attack at Antwerp
- Apr 3 Francis of Valois, Duke of Anjou honored as Duke of Gelre, Earl of Zutphen
- Apr 16 Spanish conquistador Hernando de Lerma founds the settlement of Salta in Argentina
- Jun 20 Bishop Domingo de Salazar of Manila suppresses the Philippines
- Jun 21 Honnō-ji Incident: assassination of Oda Nobunaga by his own general Akechi Mitsuhide in Kyoto, Japan
- Jul 2 Battle of Yamazaki: Toyotomi Hideyoshi defeats Akechi Mitsuhide
- Jul 22 Willem of Orange moves from Antwerp to Delft
- Aug 23 Francis of Valois, Duke of Anjou pays tribute to earl of Flanders
- Oct 4 Last Julian calendar day in Spain, Portugal and pontifical states. To sync to the Gregorian calendar, 10 days are skipped and the next date is Oct 15.
- Oct 15 Gregorian calendar introduced in Spain, Portugal and pontifical states, after skipping 10 days after Oct 4 to sync the calendar
- Dec 10 France begins use of Gregorian calendar
- Dec 14 Zealand, Brabant Netherlands adopt Gregorian calendar, tomorrow is 12/25
- Dec 15 Leidse university names Rembert Dodoens professor of botany and medicine
- Dec 15 Spanish Netherlands, Denmark and Norway adopt the Gregorian calendar
- Dec 21 Flanders adopts the Gregorian calendar, skipping 11 days making the next day Jan 1, 1583
- Dec 25 Zealand and Brabant adopts Gregorian calendar, yesterday was Dec 14th