Year 305 » Diocletian and Maximian retire from the office of Roman Emperors called Roman Emperor.
Year 524 Calendar » King Sigismund of Burgundy is executed at Orléans after an 8-year reign and is succeeded by his brother Godomar.
Year 880 Calendar » The Nea Ekklesia is inaugurated in Constantinople, setting the model for all later cross-in-square Orthodox churches.
Year 1328 Calendar » Wars of Scottish Independence end: By the Treaty of Edinburgh–Northampton the Kingdom of England recognises the Kingdom of Scotland as an independent state.
Year 1455 Calendar » Battle of Arkinholm, Royal forces end the Black Douglas hegemony in Scotland.
Year 1576 Calendar » Stephen Báthory, the reigning Prince of Transylvania, marries Anna Jagiellon and they become co-rulers of the Polish–Lithuanian Commonwealth.
Year 1707 Calendar » The Act of Union 1707 known as Act of Union joins the Kingdom of England and Kingdom of Scotland to form the Kingdom of Great Britain.
Year 1753 Calendar » Publication of 'Species Plantarum' by Carolus Linnaeus known as Linnaeus, and the formal start date of plant taxonomy adopted by the International Code of Botanical Nomenclature.
Year 1759 Calendar » Josiah Wedgwood founds the Wedgwood pottery company in Great Britain.
Year 1776 Calendar » Establishment of the Illuminati in Ingolstadt (Upper Bavaria), by Jesuit-taught Adam Weishaupt.
Year 1778 Calendar » American Revolution: The Battle of Crooked Billet begins in Hatboro, Pennsylvania.
Year 1785 Calendar » Kamehameha I, the king of Hawaii (island) e.g Hawaiokinai, defeats Kalanikūpule and establishes the Kingdom of Hawaiokinai.
Year 1794 Calendar » War of the Pyrenees: The Battle of Boulou ends, in which French First Republic or French forces defeat the Spanish and regain nearly all the land they lost to Spain in 1793.
Year 1840 Calendar » The Penny Black, the first official adhesive postage stamp, is issued in the United Kingdom.
Year 1846 Calendar » The few remaining Mormons left in Nauvoo, Illinois, formally dedicate the Nauvoo Temple (Latter Day Saints) called Temple.
Year 1851 Calendar » Queen Victoria opens the Great Exhibition in London.
Year 1852 Calendar » The Philippine peso is introduced into circulation.
Year 1856 Calendar » The Province of Isabela (province) known as Isabela was created in the Philippines in honor of the Queen Isabela II of Spain.
Year 1862 Calendar » American Civil War: The Union Army completes its capture of New Orleans.
Year 1863 Calendar » American Civil War: The Battle of Chancellorsville begins.
Year 1865 Calendar » The Empire of Brazil, Argentina, and Uruguay sign the Treaty of the Triple Alliance.
Year 1866 Calendar » The Memphis Riots of 1866 named Memphis Race Riots begin. In three days time, 46 blacks and two whites were killed. Reports of the atrocities influenced passage of the Fourteenth Amendment to the United States Constitution.
Year 1875 Calendar » Alexandra Palace reopens after being burned down in a fire in 1873.
Year 1884 Calendar » Proclamation of the demand for Eight-hour day or eight-hour workday in the United States.
Year 1884 » Moses Fleetwood Walker becomes the first black person to play in a professional baseball game in the United States.
Year 1885 Calendar » The original Chicago Board of Trade Building opens for business.
Year 1898 Calendar » Spanish–American War — Battle of Manila Bay: The United States Navy destroys the Spanish Pacific fleet in the first battle of the war.
Year 1900 Calendar » The Scofield Mine disaster kills over 200 men in Scofield, Utah in what is to date the fifth-worst mining accident in United States history.
Year 1901 Calendar » The Pan-American Exposition opens in Buffalo, New York.
Year 1915 Calendar » The RMS called Lusitania departs from New York City on her two hundred and second, and final, crossing of the North Atlantic. Six days later, the ship is torpedoed off the coast of Ireland with the loss of 1,198 lives.
Year 1925 Calendar » The All-China Federation of Trade Unions is officially founded. Today it is the largest trade union in the world, with 134 million members.
Year 1925 » The first Ritual of the Calling of an Engineer is held at the University of Toronto, Canada.
Year 1927 Calendar » The first cooked meals on a scheduled flight are introduced on an Imperial Airways flight from London to Paris.
Year 1927 » The Union Labor Life Insurance Company is founded by the American Federation of Labor.
Year 1941 Calendar » World War II: German forces launch a major attack on Tobruk.
Year 1944 Calendar » World War II: Two hundred Communist prisoners are shot by the Germans at Kaisariani in Athens, Greece in reprisal for the killing of General Franz Krech by partisans at Molaoi.
Year 1945 Calendar » World War II: A German newsreader officially announces that Adolf Hitler has "fallen at his command post in the Reich Chancellery fighting to the last breath against Bolshevism and for Germany". The Soviet flag is raised over the Reich Chancellery, by ord
Year 1945 » World War II: Nazi propaganda minister Joseph Goebbels and his wife Magda Goebbels named Magda commit suicide in the Reich Garden outside the Führerbunker. Their Goebbels children or children are murdered by Magda by having cyanide pills inserted into the
Year 1945 » World War II: Yugoslav Partisans free Trieste.
Year 1946 Calendar » Start of three-year 1946 Pilbara strike e.g Pilbara strike of Indigenous Australians.
Year 1946 » The Paris Peace Conference, 1946 called Paris Peace Conference concludes that the islands of the Dodecanese should be returned to Greece by Italy.
Year 1947 Calendar » Portella della Ginestra massacre against May Day celebrations in Sicily by the bandit and separatist leader Salvatore Giuliano where 11 persons are killed and 33 wounded.
Year 1950 Calendar » Guam is organized as a United States Commonwealth (U.S. insular area) e.g commonwealth.
Year 1956 Calendar » The polio vaccine developed by Jonas Salk is made available to the public.
Year 1956 » A doctor in Japan reports an "epidemic of an unknown disease of the central nervous system", marking the official discovery of Minamata disease.
Year 1957 Calendar » Thirty-four people are killed when a Vickers VC.1 Viking named Vickers Viking airliner 1957 Blackbushe Viking accident or crashes in Hampshire England.
Year 1960 Calendar » Formation of the western Indian states of Gujarat and Maharashtra. Also known as "Maharashtra Day".
Year 1960 » Cold War: 1960 U-2 incident called U-2 incident: Francis Gary Powers, in a Lockheed U-2 spyplane, is shot down over the Soviet Union, sparking a diplomatic crisis.
Year 1961 Calendar » The Prime Minister of Cuba, Fidel Castro, proclaims Cuba a socialist nation and abolishes elections.
Year 1965 Calendar » Battle of Dong-Yin, a naval conflict between ROC and PRC, takes place.
Year 1970 Calendar » Protests erupt in Seattle, following the announcement by President of the United States called U.S. President Richard Nixon that U.S. Forces in Vietnam would pursue enemy troops into Cambodia, a neutral country.
Year 1971 Calendar » Amtrak (the National Railroad Passenger Corporation) takes over operation of U.S. passenger rail service.
Year 1974 Calendar » The Argentine terrorist organization Montoneros is Expulsion of Montoneros from Plaza de Mayo called expelled from Plaza de Mayo by president Juan Perón.
Year 1977 Calendar » Thirty-six people are killed in Taksim Square, Istanbul, during the Labour Day celebrations.
Year 1982 Calendar » Operation Black Buck: The Royal Air Force attacks the Argentine Air Force during Falklands War.
Year 1983 Calendar » Greek composer Mikis Theodorakis is awarded the Lenin Peace Prize.
Year 1987 Calendar » Pope John Paul II beatifies Edith Stein, a Jewish-born Carmelites called Carmelite nun who was gassed in the Nazi concentration camp at Auschwitz concentration camp known as Auschwitz.
Year 1990 Calendar » The former Philippine Episcopal Church (supervised by the Episcopal Church of the United States of America) is granted full autonomy and raised to the status of an Autocephalous Anglican Province and renamed the Episcopal Church of the Philippines.
Year 1991 Calendar » Rickey Henderson of the Oakland Athletics steals his 939th base, making him the all-time leader in this category. However, his accomplishment is overshadowed later that evening by Nolan Ryan of the Texas Rangers (baseball) known as Texas Rangers, when he
Year 1994 Calendar » Three-time Formula One world champion Ayrton Senna Death of Ayrton Senna e.g is killed in an accident during the 1994 San Marino Grand Prix e.g San Marino Grand Prix at Imola.
Year 1995 Calendar » Croatian forces launch Operation Flash during the Croatian War of Independence.
Year 1999 Calendar » The body of British climber George Mallory is found on Mount Everest, 75 years after his disappearance in 1924.
Year 2001 Calendar » Philippine President Gloria Macapagal-Arroyo declares the existence of "a state of rebellion", hours after thousands of supporters of her arrested predecessor, Joseph Estrada, storm towards the Malacañan Palace or presidential palace at the height of the
Year 2003 Calendar » 2003 invasion of Iraq: In what becomes known as the "Mission Accomplished speech Mission Accomplished" speech, on board the USS Abraham Lincoln CVN-72 6 (off the coast of California), U.S. President George W. Bush declares that "major combat operations in
Year 2004 Calendar » Cyprus, Czech Republic, Estonia, Hungary, Latvia, Lithuania, Malta, Poland, Slovakia, and Slovenia join the European Union, celebrated at the residence of the President of Ireland or Irish President in Dublin.
Year 2006 Calendar » The Puerto Rico e.g Puerto Rican government closes the Department of Education and 42 other government agencies due to significant shortages in cash flow.
Year 2008 Calendar » The London Agreement (2000) called London Agreement on translation of European patents, concluded in 2000, enters into force in 14 of the 34 Contracting States to the European Patent Convention.
Year 2011 Calendar » Pope John Paul II is Beatification e.g beatified by his successor, Pope Benedict XVI.
Year 2011 » Barack Obama announces that Osama bin Laden, the suspected mastermind behind the September 11 attacks has been Death of Osama bin Laden killed by United States Navy SEALs United States special forces in Abbottabad Abbottabad, Pakistan. Due to the time dif