| 0 | | Feast of St. Quirinus of Neuss, Patron of Knights, Soldiers, and Horsemen |
| 0 | | It is Armed Forces Day in the Republic of Georgia, Camerone Day in the French Foreign Legion, and was Imperial Army Day in Japan, from 1906-1945 |
| 0 | | International Jazz Day |
| 0 | | National Bugs Bunny Day -- Learn More |
| 37 | | Roman governor Lucius Vitellius, successor to Pontius Pilate, arranged a sacrifice to "the God of the Jews" at the Temple of Jerusalem. |
| 311 | | Roman Emperor Galerius issues an edict of toleration for Christians |
| 313 | | Licinius defeated rival Roman Emperor Maximinus Daia in the Battle of Tzirallum -- Learn More |
| 462 | | Solar eclipse visible in Greece |
| 1305 | | Massacre of Adrianople: Byzantine Emperor Michael IX Palaiologos contrives the destruction of the Catalan Company |
| 1349 | | Massacre of the Jews of Radolszell, Germany |
| 1492 | | Ferdinand & Isabella agree to bankroll Columbus |
| 1527 | | Treaty of Westminster: Anglo-French alliance against Spain |
| 1563 | | King Charles VI orders the Jews expelled from France |
| 1592 | | Marco Sciarra's brigands poet escorted poet Torquato Tasso through bandit-infested mountains around Itri -- Learn More |
| 1635 | | Treaty of Compiegne: Franco-Swedish alliance in the Thirty Years' War |
| 1789 | | George Washington was sworn in as the first POTUS, Federal Hall, NY |
| 1789 | | George Washington is inaugurated as the First President of the United States, at Federal Hall, NY |
| 1794 | | Menin, Belgium: Austrians break out of a French siege |
| 1838 | | Nicaragua declares independence from the Central American Federation |
| 1848 | | Battle of Pastrengo: Piedmontese defeat the Austrians |
| 1849 | | Battle of the Villa Pamfili: The Garibaldini defeat the French outside Rome, who fall back on Civitavecchia |
| 1860 | | Battle of Fort Defiance: U.S. troops beat off a Navaho attack |
| 1861 | | Lincoln orders Federal troops to evacuate the Indian Territory |
| 1862 | | Skirmishing at Swift Run Gap, WV |
| 1863 | | Battle of Camerone: Heroic French Foreign Legion defense against an overwhelming Mexican force |
| 1864 | | Battle of Jenkins' Ferry: Inconclusive action bungled by both sides |
| 1871 | | American & Mexican bandits murder 144 Apaches in Arizona |
| 1900 | | USA annexes Hawaii |
| 1904 | | Christian Hülsmeye patents the "telemobiloscope," an early radar, which is totally ignored. |
| 1906 | | The Meiji Emperor reviews the Imperial Army on its return from victory over Russia, at the Yakusuni Shrine |
| 1937 | | General Douglas MacArthur marries Jean Faircloth |
| 1942 | | British troops evacuate Mandalay in Burma |
| 1942 | | Luzon: Japanese bombardment of Corregidor and harbor forts continues. |
| 1942 | | USS 'Peto' (SS-265) is launched, first submarine built on the Great Lakes, at Manitowoc |
| 1943 | | Bergen-Belsen Concentration Camp for Jews established |
| 1943 | | Chinese halt Japanese in Hupeh, ending threat to Chungking. |
| 1943 | | Panay: USS 'Gudgeon' (SS-211) conducts supply mission to Filipino guerrillas |
| 1944 | | U.S. carrier aircraft begin two day raid on Truk |
| 1945 | | American & Soviet forces link up at Torgau in Germany |
| 1945 | | Okinawa: Kamikaze attacks continue on the U.S. fleet. |
| 1945 | | Red Army liberates the Ravensbruck concentration camp |
| 1945 | | Lt. Raqymjan Qoshqarbaev raised the Red Banner over the Reichstag Building in Berlin |
| 1961 | | Fidel Castro receives the Lenin Peace Prize |
| 1980 | | Abdication of Queen Juliana (1948-80) & Accession of Queen Beatrix of Netherlands (1980-2012), who also abdicates |
| 1980 | | Terrorists seize the Iranian Embassy in London |
| 2012 | | Abdication of Queen Beatrice of the Netherlands (r. 1980-2012), third Dutch Queen Regnant in a row since 1880, and the third to abdicate, and the accession of her son as William IV, the first Dutch king since 1880 |
| 2019 | | Emperor Akihito of Japan since 1989 abdicates in favor of his son Naruhito |
