About June 21

June 21, 2025 is the 172nd day of the year 2025 in the Gregorian calendar. There are 193 days remaining until the end of this year. The day of the week is Saturday.

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. Pearl is the modern birthstone for this month. Moonstone is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 241 days remaining before the start of the next Chinese New Year.

June 21: More About This Day

On non-leap years (until 2039), this day marks the summer solstice in the northern hemisphere and the winter solstice in the southern hemisphere, and is the day of the year with the most hours of daylight in the northern hemisphere and the least hours of daylight in the southern hemisphere.

What Happened On June 21

  • 217 BC
    The Romans, led by Gaius Flaminius, are ambushed and defeated by Hannibal at the Battle of Lake Trasimene.
  • 1307
    Külüg Khan is enthroned as Khagan of the Mongols and Wuzong of the Yuan.
  • 1582
    Japanese daimyo Oda Nobunaga is forced to commit suicide in Honnō-ji, Kyoto.
  • 1621
    Execution of 27 Czech noblemen on the Old Town Square in Prague as a consequence of the Battle of White Mountain.
  • 1734
    In Montreal in New France, a slave known by the French name of Marie-Joseph Angélique is put to death, having been convicted of setting the fire that destroyed much of the city.
  • 1749
    Halifax, Nova Scotia, is founded.
  • 1788
    New Hampshire ratifies the Constitution of the United States and is admitted as the 9th state in the United States.
  • 1791
    King Louis XVI of France and his immediate family begin the Flight to Varennes during the French Revolution.
  • 1864
    New Zealand Land Wars: The Tauranga Campaign ends.
  • 1898
    The United States captures Guam from Spain.
  • 1900
    Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departed Saint Petersburg in Russia on the explorer ship Zarya, never to return.
  • 1919
    Admiral Ludwig von Reuter scuttles the German fleet in Scapa Flow, Orkney. The nine sailors killed are the last casualties of World War I.
  • 1919
    The Royal Canadian Mounted Police fire a volley into a crowd of unemployed war veterans, killing two, during the Winnipeg General Strike.
  • 1940
    The first successful west-to-east navigation of Northwest Passage begins at Vancouver, British Columbia, Canada.
  • 1942
    World War II: A Japanese submarine surfaces near the Columbia River in Oregon, firing 17 shells at nearby Fort Stevens in one of only a handful of attacks by the Japanese against the United States mainland.
  • 1942
    World War II: Tobruk falls to Italian and German forces.
  • 1948
    Columbia Records introduces the long-playing record album in a public demonstration at the Waldorf-Astoria Hotel in New York, New York.
  • 1952
    The Philippine School of Commerce, through a republic act, is converted to Philippine College of Commerce, later to be the Polytechnic University of the Philippines.
  • 1973
    In handing down the decision in Miller v. California 413 US 15, the Supreme Court of the United States establishes the Miller Test for obscenity in U.S. law.
  • 1977
    Bülent Ecevit, of CHP forms the new government of Turkey.

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