February 20 events in history

1339 The Milanese army and the St. George's (San Giorgio) Mercenaries of Lodrisio Visconti clashed in the Battle of Parabiago
1472 Orkney and Shetland are pawned by Norway to Scotland in lieu of a dowry for Margaret of Denmark
1547 Edward VI of England is crowned King of England at Westminster Abbey
1685 René-Robert Cavelier establishes Fort St. Louis at Matagorda Bay thus forming the basis for France's claim to Texas
1792 The Postal Service Act, establishing the United States Post Office Department, is signed by President George Washington
1798 Louis Alexandre Berthier removes Pope Pius VI from power
1810 Andreas Hofer, Tirolean patriot and leader of rebellion against Napoleon's forces, is executed
1813 Manuel Belgrano defeats the royalist army of Pío de Tristán during the Battle of Salta
1816 Rossini's opera The Barber of Seville premieres at the Teatro Argentina in Rome
1835 Concepción, Chile is destroyed by an earthquake
1846 Polish insurgents lead an uprising in Kraków to incite a fight for national independence
1864 American Civil War: Battle of Olustee occurs – the largest battle fought in Florida during the war
1865 End of the Uruguayan War, with a peace agreement between President Tomás Villalba and rebel leader Venancio Flores, setting the scene for the destructive War of the Triple Alliance
1872 In New York City the Metropolitan Museum of Art opens
1873 The University of California opens its first medical school in San Francisco, California
1877 Tchaikovsky's ballet Swan Lake receives its première performance at the Bolshoi Theatre in Moscow
1901 The legislature of Hawaii Territory convenes for the first time
1909 Publication of the Futurist Manifesto in the French journal Le Figaro
1913 King O'Malley drives in the first survey peg to mark commencement of work on the construction of Canberra
1921 The Young Communist League of Czechoslovakia is founded
1931 The Congress of the United States approves the construction of the San Francisco – Oakland Bay Bridge by the state of California
1933 The Congress of the United States proposes the Twenty-first Amendment to the United States Constitution that will end Prohibition in the United States
1933 Adolf Hitler secretly meets with German industrialists to arrange for financing of the Nazi Party's upcoming election campaign
1935 Caroline Mikkelsen becomes the first woman to set foot in Antarctica
1942 Lieutenant Edward O'Hare becomes America's first World War II flying ace
1943 The Parícutin volcano begins to form in Parícutin, Mexico
1943 The Saturday Evening Post publishes the first of Norman Rockwell's Four Freedoms in support of United States President Franklin Roosevelt's 1941 State of the Union address theme of Four Freedoms
1943 American movie studio executives agree to allow the Office of War Information to censor movies
1944 World War II: The United States takes Eniwetok Island
1944 World War II: The "Big Week" began with American bomber raids on German aircraft manufacturing centers
1952 Emmett Ashford becomes the first African-American umpire in organized baseball by being authorized to be a substitute umpire in the Southwestern International League
1956 The United States Merchant Marine Academy becomes a permanent Service Academy
1959 The Avro Arrow program to design and manufacture supersonic jet fighters in Canada is cancelled by the Diefenbaker government amid much political debate
1962 Mercury program: While aboard Friendship 7, John Glenn becomes the first American to orbit the earth, making three orbits in 4 hours, 55 minutes
1965 Ranger 8 crashes into the moon after a successful mission of photographing possible landing sites for the Apollo program astronauts
1971 The United States Emergency Broadcast System is accidentally activated in an erroneous national alert
1978 The last Order of Victory is bestowed upon Leonid Brezhnev
1986 The Soviet Union launches its Mir spacecraft. Remaining in orbit for 15 years, it is occupied for 10 of those years
1987 Unabomber: In Salt Lake City, a bomb explodes in a computer store
1988 The Nagorno-Karabakh Autonomous Oblast votes to secede from Azerbaijan and join Armenia, triggering the Nagorno-Karabakh War
1989 An IRA bomb destroys a section of a British Army barracks in Ternhill, England
1991 A gigantic statue of Albania's long-time leader, Enver Hoxha, is brought down in the Albanian capital Tirana, by mobs of angry protesters
1998 American figure skater Tara Lipinski becomes the youngest gold-medalist at the Winter Olympics in Nagano, Japan
2003 During a Great White concert in West Warwick, Rhode Island, a pyrotechnics display sets the Station nightclub ablaze, killing 100 and injuring over 200 others
2005 Spain becomes the first country to vote in a referendum on ratification of the proposed Constitution of the European Union, passing it by a substantial margin, but on a low turnout
2006 In South Korea the United Liberal Democrats, the three top political parties was merged into Grand National Party
2009 Two Tamil Tigers aircraft packed with C4 explosives en route to the national airforce headquarters are shot down by the Sri Lankan military before reaching their target, in a kamikaze style attack
2010 In Madeira Island, Portugal, heavy rain causes floods and mudslides, resulting in at least 43 deaths, in the worst disaster in the history of the archipelago
2013 The smallest Extrasolar planet, Kepler-37b is discovered