June 241312 BC – Mursili II launches a campaign against the Kingdom of Azzi-Hayasa. 109 – Roman emperor Trajan inaugurates the Aqua Traiana, an aqueduct that channels water from Lake Bracciano, northwest of Rome. 474 – Julius Nepos forces Roman usurper Glycerius to abdicate the throne and proclaims himself Emperor of the Western Roman Empire. 637 – The Battle of Moira is fought between the High King of Ireland and the Kings of Ulster and Dál Riata. It is claimed to be the largest battle in the history of Ireland.
May 1305 – Diocletian and Maximian retire from the office of Roman emperor. 880 – The Nea Ekklesia is inaugurated in Constantinople, setting the model for all later cross-in-square Orthodox churches. 1169 – Norman mercenaries land at Bannow Bay in Leinster, marking the beginning of the Norman invasion of Ireland. 1328 – Wars of Scottish Independence end: By the Treaty of Edinburgh–Northampton, England recognises Scotland as an independent state. 1486 – Christopher Columbus presents his plans discovering a western route to the Indies to the Spanish Queen Isabella I of Castile.
January 19379 – Emperor Gratian elevates Flavius Theodosius at Sirmium to Augustus, and gives him authority over all the eastern provinces of the Roman Empire. 649 – Conquest of Kucha: The forces of Kucha surrender after a forty-day siege led by Tang dynasty general Ashina She'er, establishing Tang control over the northern Tarim Basin in Xinjiang. 1419 – Hundred Years' War: Rouen surrenders to Henry V of England, completing his reconquest of Normandy. 1511 – The Italian Duchy of Mirandola surrenders to the Pope.
December 28418 – A papal election begins, resulting in the election of Pope Boniface I. 457 – Majorian is acclaimed as Western Roman emperor. 484 – Alaric II succeeds his father Euric and becomes king of the Visigoths. He establishes his capital at Aire-sur-l'Adour (Southern Gaul). 893 – An earthquake destroys the city of Dvin, Armenia. 1065 – Edward the Confessor's Romanesque monastic church at Westminster Abbey is consecrated. 1308 – The reign of Emperor Hanazono of Japan begins.
September 22904 – The warlord Zhu Quanzhong kills Emperor Zhaozong, the penultimate emperor of the Tang dynasty, after seizing control of the imperial government. 1236 – The Samogitians defeat the Livonian Brothers of the Sword in the Battle of Saule. 1499 – The Treaty of Basel concludes the Swabian War. 1586 – The Battle of Zutphen is a Spanish victory over the English and Dutch. 1692 – The last hanging of those convicted of witchcraft in the Salem witch trials; others are all eventually released.
June 264 – Augustus adopts Tiberius. 221 – Roman emperor Elagabalus adopts his cousin Alexander Severus as his heir and receives the title of Caesar. 363 – Roman emperor Julian is killed during the retreat from the Sasanian Empire. 684 – Pope Benedict II is the last pope to require confirmation by the Byzantine emperor before taking office. 699 – En no Ozuno, a Japanese mystic and apothecary who will later be regarded as the founder of a folk religion Shugendō, is banished to Izu Ōshima.
June 51257 – Kraków, in Poland, receives city rights. 1284 – Battle of the Gulf of Naples: Roger of Lauria, admiral to King Peter III of Aragon, destroys the Neapolitan fleet and captures Charles of Salerno. 1288 – The Battle of Worringen ends the War of the Limburg Succession, with John I, Duke of Brabant, being one of the more important victors. 1610 – The masque Tethys' Festival is performed at Whitehall Palace to celebrate the investiture of Henry Frederick, Prince of Wales.
March 271309 – Pope Clement V imposes excommunication and interdiction on Venice, and a general prohibition of all commercial intercourse with Venice, which had seized Ferrara, a papal fiefdom. 1329 – Pope John XXII issues his In Agro Dominico condemning some writings of Meister Eckhart as heretical. 1513 – Spanish explorer Juan Ponce de León reaches the northern end of The Bahamas on his first voyage to Florida. 1625 – Charles I becomes King of England, Scotland and Ireland as well as claiming the title King of France.
November 25571 BC – Servius Tullius, king of Rome, celebrates the first of his three triumphs for his victory over the Etruscans. 1034 – Máel Coluim mac Cináeda, King of Scots, dies. His grandson, Donnchad, son of Bethóc and Crínán of Dunkeld, inherits the throne. 1120 – The White Ship sinks in the English Channel, drowning William Adelin, son and heir of Henry I of England. 1177 – Baldwin IV of Jerusalem and Raynald of Châtillon defeat Saladin at the Battle of Montgisard.
August 27410 – The sacking of Rome by the Visigoths ends after three days. 1172 – Henry the Young King and Margaret of France are crowned junior king and queen of England. 1232 – Shikken Hojo Yasutoki of the Kamakura shogunate promulgates the Goseibai Shikimoku, the first Japanese legal code governing the samurai class. 1557 – The Battle of St. Quentin results in Emmanuel Philibert becoming Duke of Savoy. 1593 – Pierre Barrière failed an attempt to assassinate Henry IV of France.
