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August 20 Birthday Events Poster

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August 20 Historical Events

The following events took place on August 20. The list is arranged in chronological order.

Found 51 events. Showing 1 - 20.

  • 14
    Agrippa Postumus, adopted son of the late Roman emperor Augustus, is executed by his guards while in exile under mysterious circumstances.
  • 636
    Battle of Yarmouk: Arab forces led by Khalid ibn al-Walid take control of Syria and Palestine away from the Byzantine Empire, marking the first great wave of Muslim conquests and the rapid advance of Islam outside Arabia.
  • 917
    Battle of Acheloos: Tsar Simeon I of Bulgaria decisively defeats a Byzantine army.
  • 1000
    The foundation of the Hungarian state by Saint Stephen, celebrated as a National Day in Hungary.
  • 1083
    Canonization of the first King of Hungary, Saint Stephen and his son Saint Emeric.
  • 1308
    Pope Clement V pardons Jacques de Molay, the last Grand Master of the Knights Templar, absolving him of charges of heresy.
  • 1391
    Konrad von Wallenrode becomes the 24th Grand Master of the Teutonic Order.
  • 1467
    The Second Battle of Olmedo takes places as part of a succession conflict between Henry IV of Castile and his half-brother Alfonso, Prince of Asturias.
  • 1519
    Philosopher and general Wang Yangming defeats Zhu Chenhao, ending the Prince of Ning rebellion against the reign of the Ming dynasty’s Zhengde Emperor.
  • 1672
    Former Grand Pensionary Johan de Witt and his brother Cornelis are brutally murdered by an angry mob in The Hague.
  • 1707
    The first Siege of Pensacola comes to end with the failure of the British to capture Pensacola, Florida.
  • 1710
    War of the Spanish Succession: A multinational army led by the Austrian commander Guido Starhemberg defeats the Spanish-Bourbon army commanded by Alexandre Maître, Marquis de Bay in the Battle of Saragossa.
  • 1775
    The Spanish establish the Presidio San Augustin del Tucson in the town that became Tucson, Arizona.
  • 1794
    Battle of Fallen Timbers: American troops force a confederacy of Shawnee, Mingo, Delaware, Wyandot, Miami, Ottawa, Chippewa, and Potawatomi warriors into a disorganized retreat.
  • 1858
    Charles Darwin first publishes his theory of evolution through natural selection in The Journal of the Proceedings of the Linnean Society of London, alongside Alfred Russel Wallace’s same theory.
  • 1866
    President Andrew Johnson formally declares the American Civil War over.
  • 1882
    Tchaikovsky’s 1812 Overture debuts in Moscow, Russia.
  • 1910
    The Great Fire of 1910 (also commonly referred to as the “Big Blowup” or the “Big Burn”) occurs in northeast Washington, northern Idaho (the panhandle), and western Montana, burning approximately 3 e6acre.
  • 1914
    World War I: German forces occupy Brussels.
  • 1920
    The first commercial radio station, 8MK (now WWJ), begins operations in Detroit.
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