Editing September 23 (section)

===Pre-1600===
*[[AD 38|38]] &ndash; [[Julia Drusilla|Drusilla]], [[Caligula]]'s sister who died in June, with whom the emperor is said to have an incestuous relationship, is deified.<ref>{{cite book|first=Jacques|last=Legrand|title=Chronicle of the World|publisher=Ecam Publication|year=1989|page=210|isbn=0-13-133463-8}}</ref> 
*[[1122]] &ndash; [[Pope Callixtus II]] and Holy Roman Emperor [[Henry V, Holy Roman Emperor|Henry V]] agree to the [[Concordat of Worms]] to put an end to the [[Investiture Controversy]].<ref>{{cite book|last=Stroll|first=Mary|title=Callixtus II (1119–1124): A Pope Born to Rule|location=Leiden|publisher=Brill|date=2004|isbn=9789004139879|url=https://books.google.com/books?id=5IZSEAAAQBAJ|page=389}}</ref>
*[[1338]] &ndash; The [[Battle of Arnemuiden]], in which a French force defeats the English, is the first naval battle of the [[Hundred Years' War]] and the first naval battle in which gunpowder artillery is used.<ref name="Castex">{{cite book |first=Jean-Claude |last=Castex |url=https://books.google.com/books?id=U9tChhhw62AC&q=%2223+septembre+1338%22+%22bataille+navale%22&pg=PA18 |title=Dictionnaire des batailles navales franco-anglaises |publisher=Presses de l'Université Laval |year=2004 |page=21|isbn=9782763780610 }}</ref>
*[[1409]] &ndash; The [[Battle of Kherlen]] is the second significant victory over Ming dynasty China by the Mongols since 1368.
*[[1459]] &ndash; The [[Battle of Blore Heath]], the first major battle of the English Wars of the Roses, is won by the Yorkists.<ref>Edward Hall. ''The Union of The Noble and Illustre Famelies of Lancastre & Yorke'' (1548; reprinted as ''Hall's Chronicle'' 1809; quoted in English Heritage Battlefield Report: Blore Heath 1459)</ref>
*[[1561]] &ndash; King [[Philip II of Spain]] issues [[Cedula de identidad|cedula]], ordering a halt to colonizing efforts in Florida.<ref>{{cite book|first=Clifton|last=Daniel|title=Chronicle of America|publisher=Chronicle publication|year=1989|page=31|isbn=0-13-133745-9}}</ref>