About May 23

May 23, 2025 is the 143rd day of the year 2025 in the Gregorian calendar. There are 222 days remaining until the end of this year. The day of the week is Friday.

You can browse the full year calendar in case you need it.

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Gemini is the sun sign of a person born on this day. Emerald is the modern birthstone for this month. Sapphire is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 270 days remaining before the start of the next Chinese New Year.

What Happened On May 23

  • 1533 –
    The marriage of King Henry VIII to Catherine of Aragon is declared null and void.
  • 1568 –
    The Netherlands declare their independence from Spain.
  • 1609 –
    Official ratification of the Second Charter of Virginia takes place.
  • 1618 –
    The Second Defenestration of Prague precipitates the Thirty Years’ War.
  • 1788 –
    South Carolina ratifies the Constitution as the 8th American state.
  • 1829 –
    Accordion patent granted to Cyrill Demian in Vienna.
  • 1844 –
    Declaration of the Báb: a merchant of Shiraz announces that he is a Prophet and founds a religious movement that would later be brutally crushed by the Persian government. He is considered to be a forerunner of the Bahá'í Faith, and Bahá'ís celebrate the day as a holy day.
  • 1900 –
    American Civil War: Sergeant William Harvey Carney becomes the first African American to be awarded the Medal of Honor, for his heroism in the Assault on the Battery Wagner in 1863.
  • 1907 –
    The unicameral Parliament of Finland gathers for its first plenary session.
  • 1911 –
    The New York Public Library is dedicated.
  • 1915 –
    World War I: Italy joins the Allies after they declare war on Austria-Hungary.
  • 1945 –
    World War II: Heinrich Himmler, the head of the SS, commits suicide while in Allied custody.
  • 1949 –
    The Federal Republic of Germany is established and the Basic Law for the Federal Republic of Germany is proclaimed.
  • 1951 –
    Tibetans sign the Seventeen Point Agreement for the Peaceful Liberation of Tibet with the People’s Republic of China.
  • 1967 –
    Egypt closes the Straits of Tiran and blockades the port of Eilat at the northern end of the Gulf of Aqaba to Israeli shipping.
  • 1990 –
    Jordan Mack was born.
  • 1998 –
    The Good Friday Agreement is accepted in a referendum in Northern Ireland with 75% voting yes.
  • 2002 –
    The “55 parties” clause of the Kyoto protocol is reached after its ratification by Iceland.
  • 2006 –
    Alaskan stratovolcano Mount Cleveland erupts.
  • 2008 –
    The International Court of Justice (ICJ) awards Middle Rocks to Malaysia and Pedra Branca (Pulau Batu Puteh) to Singapore, ending a 29-year territorial dispute between the two countries.

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