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September 12 - Wikipedia
Pre-1600 490 BC – Battle of Marathon: The conventionally accepted date for the Battle of Marathon. The Athenians and their Plataean allies defeat the first Persian invasion force of Greece. 372 – Sixteen Kingdoms: Jin Xiaowudi, age 10, succeeds his father Jin Jianwendi as Emperor of the Eastern Jin dynasty.1213 – … See more
September 12 is the 255th day of the year (256th in leap years) in the Gregorian calendar; 110 days remain until the end of the year. See more
Pre-1600
• 1415 – John de Mowbray, 3rd Duke of Norfolk (d. 1461)
• 1494 – Francis I of France (d. 1547)
• 1590 – María de Zayas, Spanish writer (d. 1661) See more• "On This Day". BBC.
• The New York Times: On This Day
• "Historical Events on September 12". OnThisDay.com. See more490 BCThe Athenians and their Plataean allies defeat the first Persian invasion force of Greece.1213Simon de Montfort, 5th Earl of Leicester, defeats Peter II of Aragon at the Battle of Muret.1683Several European armies join forces to defeat the Ottoman Empire.1848A new constitution marks the establishment of Switzerland as a federal state.1906The Newport Transporter Bridge is opened in Newport, South Wales by Viscount Tredegar.1910Premiere performance of Gustav Mahler's Symphony No. 8 in Munich (with a chorus of 852 singers and an orchestra of 171 players. Mahler's rehearsal assistant conductor was Bruno Walter).1933Leó Szilárd, waiting for a red light on Southampton Row in Bloomsbury, conceives the idea of the nuclear chain reaction.1940Cave paintings are discovered in Lascaux, France.1942World War II: First day of the Battle of Edson's Ridge during the Guadalcanal Campaign. U.S. Marines protecting Henderson Field are attacked by Imperial Japanese Army troops.1953U.S. Senator and future President John Fitzgerald Kennedy marries Jacqueline Lee Bouvier at St. Mary's Church in Newport, Rhode Island.• Christian feast day:
• Commemoration of the mass hanging of the Saint Patrick's Battalion (Mexico)
• Day of Conception (Russia)
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