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April 20 Birthday Events Poster

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April 20 Historical Events

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

Found 57 events. Showing 1 - 30.

  • 1303
    The Sapienza University of Rome is instituted by Pope Boniface VIII.
  • 1453
    Three Genoese galleys and a Byzantine blockade runner fight their way through an Ottoman blockading fleet a few weeks before the fall of Constantinople.
  • 1534
    Jacques Cartier begins his first voyage to what is today the east coast of Canada, the island of Newfoundland and Labrador.
  • 1535
    The sun dog phenomenon observed over Stockholm and depicted in the famous painting Vädersolstavlan.
  • 1653
    Oliver Cromwell dissolves the Rump Parliament.
  • 1657
    Admiral Robert Blake destroys a Spanish silver fleet under heavy fire at the Battle of Santa Cruz de Tenerife.
  • 1657
    Freedom of religion is granted to the Jews of New Amsterdam (later New York City).
  • 1689
    The former king, James II of England, now deposed, lays siege to Derry.
  • 1752
    Start of Konbaung–Hanthawaddy War, a new phase in the Burmese Civil War (1740–57).
  • 1770
    The Georgian king, Erekle II, abandoned by his Russian ally Count Totleben, wins a victory over Ottoman forces at Aspindza.
  • 1775
    American Revolutionary War: The Siege of Boston begins, following the battles at Lexington and Concord.
  • 1789
    George Washington arrives at Grays Ferry, Philadelphia while en route to Manhattan for his inauguration
  • 1792
    France declares war against the “King of Hungary and Bohemia”, the beginning of French Revolutionary Wars.
  • 1800
    The Septinsular Republic is established.
  • 1809
    Two Austrian army corps in Bavaria are defeated by a First French Empire army led by Napoleon at the Battle of Abensberg on the second day of a four-day campaign that ended in a French victory.
  • 1810
    The Governor of Caracas declares independence from Spain.
  • 1818
    The case of Ashford v Thornton ends, with Abraham Thornton allowed to go free rather than face a retrial for murder, after his demand for trial by battle is upheld.
  • 1828
    René Caillié becomes the first non-Muslim to enter Timbuktu.
  • 1836
    U.S. Congress passes an act creating the Wisconsin Territory.
  • 1861
    American Civil War: Robert E. Lee resigns his commission in the United States Army in order to command the forces of the state of Virginia.
  • 1862
    Louis Pasteur and Claude Bernard complete the experiment falsifying the theory of spontaneous generation.
  • 1865
    Astronomer Angelo Secchi demonstrates the Secchi disk, which measures water clarity, aboard Pope Pius IX’s yacht, the L'Immaculata Concezion.
  • 1871
    The Civil Rights Act of 1871 becomes law.
  • 1876
    The April Uprising begins. Its suppression shocks European opinion, and Bulgarian independence becomes a condition for ending the Russo-Turkish War.
  • 1884
    Pope Leo XIII publishes the encyclical Humanum genus.
  • 1902
    Pierre and Marie Curie refine radium chloride.
  • 1908
    Opening day of competition in the New South Wales Rugby League.
  • 1912
    Opening day for baseball’s Tiger Stadium in Detroit, and Fenway Park in Boston.
  • 1914
    Nineteen men, women, and children die in the Ludlow Massacre during a Colorado coal-miner’s strike.
  • 1916
    The Chicago Cubs play their first game at Weeghman Park (currently Wrigley Field), defeating the Cincinnati Reds 7–6 in 11 innings.

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