Today in History: September 21
September 21 is the 264th day of the year (265th in leap years) in the Gregorian calendar. There are 101 days remaining until the end of the year.
455 – Emperor Avitus enters Rome with a Gallic army and consolidates his power.
1170 – The Kingdom of Dublin falls to Norman invaders.
1217 – Livonian Crusade: The Estonian leader Lembitu and Livonian leader Kaupo the Accursed are killed in the Battle of St. Matthew's Day.
1435 – The Congress of Arras causes Burgundy to switch sides in the Hundred Years' War.
1745 – A Hanoverian army is defeated, in ten minutes, by the Jacobite forces of Prince Charles Edward Stuart
1776 – Part of New York City is burned shortly after being occupied by British forces.
1780 – American Revolutionary War: Benedict Arnold gives the British the plans to West Point.
1796 – French Revolution: The National Convention abolishes the monarchy.
\1843 – John Williams Wilson takes possession of the Strait of Magellan on behalf of the Chilean government.
1860 – Second Opium War: An Anglo-French force defeats Chinese troops at the Battle of Palikao.
1896 – Anglo-Egyptian conquest of Sudan: British forces under the command of Horatio Kitchener take Dongola.
1898 – Empress Dowager Cixi seizes power and ends the Hundred Days' Reform in China.
1921 – A storage silo in Oppau, Germany, explodes, killing 500-600 people.
1933 – Salvador Lutteroth establishes Mexican professional wrestling.
1934 – A large typhoon hits western Honshū, Japan, killing more than three thousand people.
1937 – J. R. R. Tolkien's The Hobbit is published.
1938 – The Great Hurricane of 1938 makes landfall on Long Island in New York. The death toll is estimated at 500-700 people.
1939 – Romanian Prime Minister Armand Călinescu is assassinated by the Iron Guard.
1942 – The Holocaust in Ukraine: On the Jewish holiday of Yom Kippur, Nazis send over 1,000 Jews of Pidhaitsi to Bełżec extermination camp.
1942 – The Holocaust in Ukraine: In Dunaivtsi, Ukraine, Nazis murder 2,588 Jews.
1942 – The Holocaust in Poland: At the end of Yom Kippur, Germans order Jews to permanently move from Konstantynów to Biała Podlaska.
1942 – The Boeing B-29 Superfortress makes its maiden flight.
1949 – The People's Republic of China is proclaimed.
1953 – Lieutenant No Kum-sok, a North Korean pilot, defects to South Korea with his jet fighter.
1964 – Malta gains independence from the United Kingdom, but remains in the Commonwealth.
1964 – The North American XB-70 Valkyrie, the world's fastest bomber, makes its maiden flight from Palmdale, California.
1965 – The Gambia, Maldives and Singapore are admitted as members of the United Nations.
1971 – Bahrain, Bhutan and Qatar join the United Nations.
1972 – Philippine President Ferdinand Marcos begins authoritarian rule by declaring martial law.
1976 – Orlando Letelier is assassinated in Washington, D.C. He had been a member of the former Chilean Marxist government.
1976 – Seychelles joins the United Nations.
1981 – Belize is granted full independence from the United Kingdom.
1981 – Sandra Day O'Connor is unanimously approved by the U.S. Senate as the first female Supreme Court justice.
1984 – Brunei joins the United Nations.
1991 – Armenia gains independence from the Soviet Union.
1993 – Russian President Boris Yeltsin triggers a constitutional crisis when he suspends parliament and scraps the constitution.
1996 – The Defense of Marriage Act is passed by the United States Congress.
1999 – The Chi-Chi earthquake occurs in central Taiwan, leaving about 2,400 people dead.
2001 – America: A Tribute to Heroes is broadcast by over 35 network and cable channels, raising over $200 million for the victims of the September 11 attacks.
2001 – Ross Parker is murdered in Peterborough, England, by a gang of ten Muslims.
2003 – The Galileo spacecraft is terminated by sending it into Jupiter's atmosphere.
2013 – Al-Shabaab Islamic militants attack the Westgate shopping mall in Kenya, killing at least 67 people.