17th day events in history

April 17, 69 After the First Battle of Bedriacum, Vitellius becomes Roman Emperor
March 17, 180 Marcus Aurelius dies leaving Commodus the sole emperor of the Roman Empire
July 17, 180 Twelve inhabitants of Scillium in North Africa are executed for being Christians. This is the earliest record of Christianity in that part of the world
February 17, 364 Emperor Jovian dies after a reign of eight months. He is found dead in his tent at Tyana (Asia Minor) en route back to Constantinople in suspicious circumstances
January 17, 395 Emperor Theodosius I dies in Milan, the Roman Empire is re-divided into an eastern and a western half. The Eastern Roman Empire is centered in Constantinople under Arcadius, son of Theodosius, and the Western Roman Empire in Mediolanum under Honorius, his brother (aged 10)
March 17, 455 Petronius Maximus becomes, with support of the Roman Senate, emperor of the Western Roman Empire
September 17, 456 Remistus, Roman general (magister militum), is besieged by a Gothic force at Ravenna and later executed in the Palace in Classis, outside the city
October 17, 456 Battle of Placentia: Ricimer, supported by Majorian (comes domesticorum), defeats the Roman usurper Avitus near Piacenza (Northern Italy)
November 17, 474 Emperor Leo II dies after a reign of ten months. He is succeeded by his father Zeno, who becomes sole ruler of the Byzantine Empire
December 17, 546 Siege of Rome: The Ostrogoths under king Totila plunder the city, by bribing the Byzantine garrison
March 17, 624 Led by Muhammad, the Muslims of Medina defeat the Quraysh of Mecca in the Battle of Badr
November 17, 794 Japanese Emperor Kanmu changes his residence from Nara to Kyoto
December 17, 920 Romanos I Lekapenos is crowned co-emperor of the underage Constantine VII
December 17, 942 Assassination of William I of Normandy
August 17, 986 Byzantine–Bulgarian Wars: Battle of the Gates of Trajan – The Bulgarians under the Comitopuli Samuel and Aron defeat the Byzantine forces at the Gates of Trajan, with Byzantine Emperor Basil II barely escaping
March 17, 1001 The King of Butuan in the Philippines sends a tributary mission to the Song Dynasty of China
April 17, 1080 The King of Denmark Harald III dies and is succeeded by Canute IV, who would later be the first Dane to be canonized
October 17, 1091 London tornado of 1091: A tornado thought to be of strength T8/F4 strikes the heart of London
September 17, 1111 Highest Galician nobility led by Pedro Fróilaz de Traba and the bishop Diego Gelmírez crown Alfonso VII as "King of Galicia"
September 17, 1176 The Battle of Myriokephalon is fought between the Byzantine Empire and the Seljuk Turks
November 17, 1183 The Battle of Mizushima
August 17, 1186 Georgenberg Pact: Duke Ottokar IV of Styria and Duke Leopold V of Austria sign a heritage agreement in which Ottokar gives his duchy to Leopold and to his son Frederick under the stipulation that Austria and Styria would henceforth remain undivided
July 17, 1203 The Fourth Crusade captures Constantinople by assault. The Byzantine emperor Alexios III Angelos flees from his capital into exile
January 17, 1287 King Alfonso III of Aragon invades Minorca
November 17, 1292 John Balliol becomes King of Scotland
March 17, 1337 Edward, the Black Prince is made Duke of Cornwall, the first Duchy in England
October 17, 1346 Battle of Neville's Cross: King David II of Scotland is captured by the English near Durham, and imprisoned in the Tower of London for eleven years
April 17, 1349 Fall of the Bavand dynasty, and rise of the Afrasiyab dynasty
February 17, 1370 Northern Crusades: Grand Duchy of Lithuania and the Teutonic Knights meet in the Battle of Rudau
January 17, 1377 Pope Gregory XI moves the Papacy back to Rome from Avignon
August 17, 1386 Karl Topia, the ruler of Princedom of Albania forges an alliance with the Republic of Venice, committing to participate in all wars of the Republic and receiving coastal protection against the Ottomans in return
May 17, 1395 Battle of Rovine, Wallachians defeat an invading Ottoman army
April 17, 1397 Geoffrey Chaucer tells The Canterbury Tales for the first time at the court of Richard II. Chaucer scholars have also identified this date (in 1387) as the start of the book's pilgrimage to Canterbury
December 17, 1398 Sultan Nasir-u Din Mehmud's armies in Delhi are defeated by Timur
July 17, 1402 Zhu Di, better known by his era name as the Yongle Emperor, assumes the throne over the Ming Dynasty of China
November 17, 1405 Sharif ul-Hāshim establishes the Sultanate of Sulu
February 17, 1411 Following the successful campaigns during the Ottoman Interregnum, Musa Çelebi, one of the sons of Bayezid I, becomes Sultan with the support of Mircea I of Wallachia
August 17, 1424 Hundred Years' War: Battle of Verneuil – An English force under John, Duke of Bedford defeats a larger French army under the Duke of Alençon, John Stewart, and Earl Archibald of Douglas
July 17, 1429 Hundred Years' War: Charles VII of France is crowned the King of France in the Reims Cathedral after a successful campaign by Joan of Arc
October 17, 1448 Second Battle of Kosovo, where the mainly Hungarian army led by John Hunyadi is defeated by an Ottoman army led by Sultan Murad II
March 17, 1452 The Battle of Los Alporchones is fought in the context of the Spanish Reconquista between the Emirate of Granada and the combined forces of the Kingdom of Castile and Murcia resulting in a Christian victory
July 17, 1453 Battle of Castillon: The last battle of Hundred Years' War, the French under Jean Bureau defeat the English under the Earl of Shrewsbury, who is killed in the battle in Gascony
October 17, 1456 The University of Greifswald is established, making it the second oldest university in northern Europe (also for a period the oldest in Sweden, and Prussia)
June 17, 1462 Vlad III the Impaler attempts to assassinate Mehmed II (The Night Attack) forcing him to retreat from Wallachia
September 17, 1462 The Battle of Świecino (also known as the Battle of Żarnowiec) is fought during Thirteen Years' War
April 17, 1492 Spain and Christopher Columbus sign the Capitulations of Santa Fe for his voyage to Asia to acquire spices
June 17, 1497 Battle of Deptford Bridge – forces under King Henry VII defeat troops led by Michael An Gof
August 17, 1498 Cesare Borgia, son of Pope Alexander VI, becomes the first person in history to resign the cardinalate. On the same day, the French King Louis XII names him Duke of Valentinois
February 17, 1500 Duke Friedrich and Duke Johann attempt to subdue the peasantry of Dithmarschen, Denmark, in the Battle of Hemmingstedt
November 17, 1511 Henry VIII of England concluded the Treaty of Westminster, a pledge of mutual aid against the French, with Ferdinand II of Aragon