February 29, also known as leap day or leap year day, is a date added to most years that are divisible by 4, such as 2016, 2020, and 2024. A leap day is added in various solar calendars (calendars based on the Earth’s revolution around the Sun), including the Gregorian calendar standard in…
February 17 in History 1370 – Northern Crusades: Grand Duchy of Lithuania and the Teutonic Knights meet in the Battle of Rudau. 1411 – Following the successful campaigns during the Ottoman Interregnum, Musa Çelebi, one of the sons of Bayezid I, becomes Sultan of the Ottoman Empire with the support of Mircea I of Wallachia. 1500 –…
February 16 in History 1249 – Andrew of Longjumeau is dispatched by Louis IX of France as his ambassador to meet with the Khagan of the Mongol Empire. 1270 – Grand Duchy of Lithuania defeats the Livonian Order in the Battle of Karuse. 1630 – Dutch forces led by Hendrick Lonck capture Olinda in what was to become part of Dutch Brazil.…
February 11 in History 660 BC – Traditional date for the foundation of Japan by Emperor Jimmu. AD 55 – The death under mysterious circumstances of Tiberius Claudius Caesar Britannicus, heir to the Roman empire, on the eve of his coming of age clears…
February 7 in History 457 – Leo I the Thracian becomes emperor of the Byzantine Empire. 987 – Bardas Phokas the Younger and Bardas Skleros, Byzantine generals of the military elite, begin a wide-scale rebellion against Emperor Basil II. 1301 – Edward of Caernarvon (later king Edward II of England) becomes the first English Prince of…
February 6 in History AD 60 – The earliest date for which the day of the week is known. A graffito in Pompeii identifies this day as a dies Solis (Sunday). In modern reckoning, this date would have been a Wednesday. 1579 – The Archdiocese of Manila is made a diocese…
This day marks the approximate midpoint of winter in the Northern Hemisphere and of summer in the Southern Hemisphere (starting the season at the December solstice). February 4 in History 211 – Following the death of Rome’s Emperor Septimius Severus…
January 27 in History AD 98 – Trajan succeeds his adoptive father Nerva as Roman emperor; under his rule, the Roman Empire will reach its maximum extent. 1186 – Henry VI, the son and heir of the Holy Roman Emperor Frederick I, marries Constance of…
January 22 in History 613 – Eight-month-old Constantine is crowned as co-emperor (Caesar) by his father Heraclius at Constantinople. 871 – Battle of Basing: The West Saxons led by King Æthelred I are defeated by the Danelaw Vikings at Basing. 1506 – The first contingent of 150 Swiss Guards arrives at the Vatican. 1517 – The Ottoman Empire under Selim I defeats the Mamluk Sultanate and captures…
January 19 in History 379 – 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…