Gregory Conquers Julius Caesar
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
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V