January 15 Russia cedes Livonia and Estonia to Poland, loses access to Baltic February 19 Francis of Valois becomes duke of Brabant February 24 Pope Gregory XIII announces New Style (Gregorian) calendar March 18 Prince Willem of Orange injured in attack at Antwerp April 3 French van Valois honored as duke of Gelre/earl of Zutphen June 20 Bishop Domingo de Salazar of Manila suppresses the Philippines July 22 Willem van Orange moves from Antwerp to Delft August 22 King James IV of Scotland captured August 23 French van Valois pays tribute to earl of Flanders October 4 Last Julian calender day in Spain/Portugal/pontifical states October 5 Gregorian calendar introduced in Italy, other Catholic countries October 15 Many Catholic countries switch to Gregorian calendar, skip 10 days November 27 William Shakespeare marries Anne Hathaway November 28 Playwright and poet William Shakespeare weds Anne Hathaway December 10 France begins use of Gregorian calendar December 14 Zealand/Brabant Netherlands adopt Gregorian calendar, tomorrow is 12/25 December 15 Leidse university names Rembert Dodoens professor of botany/medicine December 15 Spanish Netherlands/Denmark/Norway adopt Gregorian calendar December 21 Flanders adopts Gregorian calendar, tomorrow is Jan 1 1583 December 25 Zealand/Brabant adopts Gregorian calendar, yesterday was Dec 14th
