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April 20
in history

Washington arrives at Grays Ferry, Philadelphia (1789), and Pasteur and Bernard complete experiment against spontaneous generation (1862). Born on this day: Adolf Hitler, Napoleon III and Joan Miró. Died: Ferdinand Braun, Bram Stoker and Idriss Déby.

33 events, 69 births and 59 deaths on this date.

1789

Washington arrives at Grays Ferry, Philadelphia

Washington was on his way to New York, where he would be sworn in as the first president under the new Constitution. Grays Ferry, in Philadelphia, was one stop along that journey.

Gilbert Stuart · Public domain

Events

  1. 1862

    Pasteur and Bernard complete experiment against spontaneous generation

    Louis Pasteur and Claude Bernard showed that life did not simply appear on its own. Sealed, sterilised flasks stayed clear, while open ones grew microbes, which helped settle where germs came from.

  2. 1945

    US troops capture the German city of Leipzig

    American forces took Leipzig, a long-established trade and publishing city in Saxony. The city was later handed over to the Soviet Union, which then ran it as part of East Germany.

  3. 1898

    McKinley signs joint resolution for war against Spain

    Congress had authorised military action to free Cuba from Spanish rule, and McKinley's signature set the United States on course for a short conflict that also brought the Philippines and Puerto Rico under American control.

    photographer · Public domain
  4. 1902

    Pierre and Marie Curie purify radium chloride

    The Curies worked on radium chloride, a radioactive substance they kept purifying to a higher standard. Their research on radioactivity later won them a share of the 1903 Nobel Prize in Physics.

  5. 1808

    Napoleon III, future emperor of France, is born

    Born in the Tuileries Palace in Paris, nephew of Napoleon I, he would become the first elected president of France and then its last monarch. He ruled as emperor from 1852 until defeat by Prussia at Sedan in 1870.

    Franz Xaver Winterhalter · Public domain
  6. 1836

    Congress creates the Wisconsin Territory

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  7. 1861

    Robert E. Lee resigns his United States Army commission

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  8. 1949

    American actress Jessica Lange is born

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27 more events on April 20

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Born on April 20

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  • Adolf Hitler
    1889 – 1945 · Politician

    Adolf Hitler

    Adolf Hitler, born in Braunau am Inn, led the Nazi Party and ruled Germany as dictator before and during the Second World War. He oversaw the Holocaust, in which roughly six million Jewish people were murdered.

    Unknown author Unknown author · CC BY-SA 3.0 de
  • Napoleon III
    1808 – 1873 · Politician

    Napoleon III

    Nephew of Napoleon I, he rose from failed coups to become France's president and then emperor. He is remembered for rebuilding Paris under Haussmann and for losing the throne after defeat at Sedan in 1870.

    Franz Xaver Winterhalter · Public domain
  • Joan Miró
    1893 – 1983 · Painter

    Joan Miró

    Catalan painter, sculptor and ceramicist whose playful, dreamlike art drew on the unconscious mind and is often linked to Surrealism. His work mixed childlike images with bold, personal shapes and colours.

    Carl Van Vechten · Public domain

Died on April 20

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  • Ferdinand Braun
    1850 – 1918 · Physicist

    Ferdinand Braun

    German physicist who shared the 1909 Nobel Prize with Guglielmo Marconi for work that made long-range radio practical. He also built an early cathode-ray tube and an early semiconductor diode, both steps towards television and modern electronics.

    Public domain
  • Bram Stoker
    1847 – 1912 · Writer

    Bram Stoker

    Bram Stoker was an Irish writer best remembered for Dracula, the 1897 Gothic novel that gave the world Count Dracula. Before becoming a novelist he spent years as a theatre critic and business manager at London's Lyceum Theatre.

    unidentified photographer · Public domain
  • Idriss Déby
    1952 – 2021 · Politician

    Idriss Déby

    Chad's president for 30 years, Déby seized power in a 1990 coup and became the country's longest-serving leader. He died in April 2021 from wounds sustained fighting rebels in the Northern Chad offensive.

    Office of the White House (Amanda Lucidon) · Public domain

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