6th day events in history

October 6, 23 Rebels kill and decapitate the Xin dynasty emperor Wang Mang two days after the capital Chang'an is sacked during a peasant rebellion
November 6, 355 Roman Emperor Constantius II promotes his cousin Julian to the rank of Caesar, entrusting him with the government of the Prefecture of the Gauls
September 6, 394 Battle of the Frigidus: Roman Emperor Theodosius I defeats and kills the usurper Eugenius and his Frankish magister militum Arbogast
April 6, 402 Stilicho stymies the Visigoths under Alaric in the Battle of Pollentia
October 6, 404 Byzantine Empress Eudoxia has her seventh and last pregnancy which ends in a miscarriage. She is left bleeding and dies of an infection shortly after
July 6, 640 Battle of Heliopolis: The Muslim Arab army under 'Amr ibn al-'As defeat the Byzantine forces near Heliopolis (Egypt)
January 6, 754 Pepin III (the Short) is re-consecrated by Pope Stephen II as King of the Franks at the Basilica of Saint-Denis outside Paris
March 6, 961 Byzantine conquest of Chandax by Nikephoros Phokas, end of the Emirate of Crete
July 6, 1044 The Battle of Ménfő between troops led by Emperor Henry III and Magyar forces led by King Samuel takes place
December 6, 1060 Béla I is crowned king of Hungary
January 6, 1066 Harold Godwinson (or Harold II) is crowned King of England
January 6, 1118 Reconquista: Alfonso the Battler conquers Zaragoza
July 6, 1189 Richard I "the Lionheart" accedes to the English throne
April 6, 1199 King Richard I of England dies from an infection following the removal of an arrow from his shoulder
January 6, 1205 Philip of Swabia becomes King of the Romans
December 6, 1240 Mongol invasion of Rus': Kiev under Danylo of Halych and Voivode Dmytro falls to the Mongols under Batu Khan
April 6, 1250 Seventh Crusade: Ayyubids of Egypt capture King Louis IX of France in the Battle of Fariskur
July 6, 1253 Mindaugas is crowned King of Lithuania
August 6, 1284 The Republic of Pisa is defeated in the Battle of Meloria by the Republic of Genoa, thus losing its naval dominance in the Mediterranean
April 6, 1320 The Scots reaffirm their independence by signing the Declaration of Arbroath
January 6, 1322 Stephen Uroš III is crowned King of Serbia
April 6, 1327 The poet Petrarch first sees his idealized love, Laura, in the church of Saint Clare in Avignon
July 6, 1348 Pope Clement VI issues a papal bull protecting the Jews accused of having caused the Black Death
January 6, 1355 Charles I of Bohemia is crowned with the Iron Crown of Lombardy as King of Italy in Milan
April 6, 1385 John, Master of the Order of Aviz, is made king John I of Portugal
July 6, 1411 Ming China's Admiral Zheng He returns to Nanjing after the third treasure voyage and presents the Sinhalese king, captured during the Ming–Kotte War, to the Yongle Emperor
July 6, 1415 Jan Hus is burned at the stake
January 6, 1449 Constantine XI is crowned Byzantine Emperor at Mystras
April 6, 1453 Mehmed II begins his siege of Constantinople (Istanbul), which falls on May 29
March 6, 1454 Thirteen Years' War: Delegates of the Prussian Confederation pledge allegiance to King Casimir IV of Poland who agrees to commit his forces in aiding the Confederation's struggle for independence from the Teutonic Knights
July 6, 1483 Richard III is crowned King of England
July 6, 1484 Portuguese sea captain Diogo Cão finds the mouth of the Congo River
January 6, 1492 The Catholic Monarchs Ferdinand and Isabella enter Granada, completing the Reconquista
September 6, 1492 Christopher Columbus sails from La Gomera in the Canary Islands, his final port of call before crossing the Atlantic Ocean for the first time
July 6, 1495 First Italian War: Battle of Fornovo – Charles VIII defeats the Holy League
August 6, 1506 The Grand Duchy of Lithuania defeated the Crimean Khanate in the Battle of Kletsk
June 6, 1508 Maximilian I, Holy Roman Emperor, is defeated in Friuli by Venetian troops
June 6, 1513 Italian Wars: Battle of Novara. Swiss troops defeat the French under Louis de la Tremoille, forcing the French to abandon Milan. Duke Massimiliano Sforza is restored
March 6, 1521 Ferdinand Magellan arrives at Guam
September 6, 1522 The Victoria, the only surviving ship of Ferdinand Magellan's expedition, returns to Sanlúcar de Barrameda in Spain, becoming the first ship to circumnavigate the world
June 6, 1523 Gustav Vasa, the Swedish regent, is elected King of Sweden, marking a symbolic end to the Kalmar Union. This is the Swedish national day
May 6, 1527 Spanish and German troops sack Rome; some consider this the end of the Renaissance. 147 Swiss Guards, including their commander, die fighting the forces of Charles V in order to allow Pope Clement VII to escape into Castel Sant'Angelo
November 6, 1528 Shipwrecked Spanish conquistador Álvar Núñez Cabeza de Vaca becomes the first known European to set foot in the area that would become Texas
December 6, 1534 The city of Quito in Ecuador is founded by Spanish settlers led by Sebastián de Belalcázar
July 6, 1535 Sir Thomas More is executed for treason against King Henry VIII of England
May 6, 1536 King Henry VIII orders English-language Bibles be placed in every church
May 6, 1536 The Siege of Cuzco commences, in which Incan forces attempt to retake the city of Cuzco from the Spanish
August 6, 1538 Bogotá, Colombia, is founded by Gonzalo Jiménez de Quesada
October 6, 1539 Spanish conquistador Hernando de Soto and his army enter the Apalachee capital of Anhaica (present-day Tallahassee, Florida) by force
January 6, 1540 King Henry VIII of England marries Anne of Cleves