13th day events in history

October 13, 54 Roman Emperor Claudius is poisoned to death under mysterious circumstances. His 17-year-old stepson Nero succeeds him to the Roman throne
June 13, 313 The Edict of Milan, signed by Constantine the Great and co-emperor Valerius Licinius granting religious freedom throughout the Roman Empire, is posted in Nicomedia
September 13, 335 Emperor Constantine the Great consecrated the Church of the Holy Sepulchre in Jerusalem
September 13, 379 Yax Nuun Ayiin I is coronated as 15 Ajaw of Tikal
October 13, 409 Vandals and Alans cross the Pyrenees and appear in Hispania
August 13, 523 John I becomes the new Pope after the death of Pope Hormisdas
January 13, 532 Nika riots in Constantinople
September 13, 533 Belisarius of the Byzantine Empire defeats Gelimer and the Vandals at the Battle of Ad Decimum, near Carthage, North Africa
August 13, 554 Emperor Justinian I rewards Liberius for his long and distinguished service in the Pragmatic Sanction, granting him extensive estates in Italy
August 13, 582 Maurice becomes Emperor of the Eastern Roman Empire
March 13, 624 Battle of Badr: a key battle between Muhammad's army – the new followers of Islam and the Quraish of Mecca. The Muslims won this battle, known as the turning point of Islam, which took place in the Hejaz region of western Arabia
March 13, 874 The bones of Saint Nicephorus are interred in the Church of the Holy Apostles, Constantinople
January 13, 888 Odo, Count of Paris becomes King of the Franks
August 13, 900 Count Reginar I of Hainault rises against Zwentibold of Lotharingia and slays him near present-day Susteren
November 13, 1002 English king Æthelred II orders the killing of all Danes in England, known today as the St. Brice's Day massacre
August 13, 1099 Pope Paschal II succeeds Pope Urban II as the 160th pope
April 13, 1111 Henry V is crowned Holy Roman Emperor
March 13, 1138 Cardinal Gregorio Conti is elected Antipope as Victor IV, succeeding Anacletus II
November 13, 1160 Louis VII of France marries Adela of Champagne
July 13, 1174 William I of Scotland, a key rebel in the Revolt of 1173–1174, is captured at Alnwick by forces loyal to Henry II of England
April 13, 1204 Constantinople falls to the Crusaders of the Fourth Crusade, temporarily ending the Byzantine Empire
September 13, 1229 Ögedei Khan is proclaimed Khagan of the Mongol Empire in Kodoe Aral, Khentii: Mongolia
July 13, 1249 Coronation of Alexander III as King of Scots
July 13, 1260 The Livonian Order suffers its greatest defeat in the 13th century in the Battle of Durbe against the Grand Duchy of Lithuania
December 13, 1294 Saint Celestine V resigns the papacy after only five months; Celestine hoped to return to his previous life as an ascetic hermit
October 13, 1307 Hundreds of Knights Templar in France are simultaneously arrested by agents of Phillip the Fair, to be later tortured into a "confession" of heresy
February 13, 1322 The central tower of Ely Cathedral falls on the night of 12th-13th
October 13, 1332 Rinchinbal Khan, Emperor Ningzong of Yuan becomes the Khagan of the Mongols and Emperor of the Yuan Dynasty, reigning for only 53 days
May 13, 1373 Julian of Norwich has visions which are later transcribed in her Revelations of Divine Love
June 13, 1373 Anglo-Portuguese Alliance between England (succeeded by the United Kingdom) and Portugal is the oldest alliance in the world which is still in force
June 13, 1381 The Peasants Revolt led by Wat Tyler culminated in the burning of the Savoy Palace
January 13, 1435 Sicut Dudum, forbidding the enslavement of the Guanche natives in Canary Islands by the Spanish, is promulgated by Pope Eugene IV
February 13, 1462 The Treaty of Westminster is finalised between Edward IV of England and the Scottish Lord of the Isles
July 13, 1490 John of Kastav finishes a cycle of frescoes in the Holy Trinity Church in Hrastovlje (now southwestern Slovenia)
September 13, 1501 Michelangelo begins work on his statue of David
February 13, 1503 Disfida di Barletta – tournament between 13 Italian and 13 French knights near Barletta
September 13, 1504 Queen Isabella and King Ferdinand issue a Royal Warrant for the construction of a Royal Chapel (Capilla Real) to be built
May 13, 1515 Mary Tudor, Queen of France and Charles Brandon, 1st Duke of Suffolk are officially married at Greenwich
August 13, 1516 The Treaty of Noyon between France and Spain is signed. Francis I of France recognizes Charles's claim to Naples, and Charles V, Holy Roman Emperor, recognizes Francis's claim to Milan
August 13, 1521 After an extended siege, forces led by Spanish conquistador Hernán Cortés capture Tlatoani Cuauhtémoc and conquer the Aztec capital of Tenochtitlan
June 13, 1525 Martin Luther marries Katharina von Bora, against the celibacy rule decreed by the Roman Catholic Church for priests and nuns
August 13, 1532 Union of Brittany and France: The Duchy of Brittany is absorbed into the Kingdom of France
August 13, 1536 Buddhist monks from Kyoto, Japan's Enryaku-ji temple set fire to 21 Nichiren temples throughout in what will be known as the Tenbun Hokke Disturbance. (Traditional Japanese date: July 27, 1536)
September 13, 1541 After three years of exile, John Calvin returns to Geneva to reform the church under a body of doctrine known as Calvinism
February 13, 1542 Catherine Howard, the fifth wife of Henry VIII of England, is executed for adultery
December 13, 1545 The Council of Trent begins
January 13, 1547 Henry Howard, Earl of Surrey is sentenced to death
August 13, 1553 Michael Servetus is arrested by John Calvin in Geneva, Switzerland as a heretic
November 13, 1553 Archbishop of Canterbury Thomas Cranmer and four others, including Lady Jane Grey, are accused of high treason and sentenced to death under Catholic Queen "Bloody" Mary I
July 13, 1558 Battle of Gravelines: In France, Spanish forces led by Count Lamoral of Egmont defeat the French forces of Marshal Paul de Thermes at Gravelines