About August 21

August 21, 2021 is the 233rd day of the year 2021 in the Gregorian calendar. There are 132 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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Leo is the sun sign of a person born on this day. Peridot is the modern birthstone for this month. Diamond is the mystical birthstone from Tibetan origin that dates back over a thousand years.

According to the lunisolar Chinese calendar, there are 164 days remaining before the start of the next Chinese New Year.

What Happened On August 21

  • 1192
    Minamoto Yoritomo becomes Seii Tai Shōgun and the de facto ruler of Japan. (Traditional Japanese date: July 12, 1192)
  • 1680
    Pueblo Indians capture Santa Fe from Spanish during the Pueblo Revolt.
  • 1770
    James Cook formally claims eastern Australia for Great Britain, naming it New South Wales.
  • 1772
    King Gustav III completes his coup d'état by adopting a new Constitution, ending half a century of parliamentary rule in Sweden and installing himself as an enlightened despot.
  • 1831
    Nat Turner leads black slaves and free blacks in a rebellion.
  • 1852
    Tlingit Indians destroy Fort Selkirk, Yukon Territory.
  • 1879
    The Virgin Mary, along with St. Joseph and St. John the Evangelist, reportedly appears at Knock Shrine in Knock, County Mayo, Ireland.
  • 1888
    The first successful adding machine in the United States is patented by William Seward Burroughs.
  • 1918
    World War I: The Second Battle of the Somme begins.
  • 1942
    World War II: a Nazi flag is installed atop the Mount Elbrus.
  • 1945
    Physicist Harry K. Daghlian, Jr. is fatally irradiated in a criticality incident during an experiment with the Demon core at Los Alamos National Laboratory.
  • 1961
    Motown releases what would be its first #1 hit, “Please Mr. Postman” by The Marvelettes.
  • 1963
    Xa Loi Pagoda raids: the Army of the Republic of Vietnam Special Forces loyal to Ngo Dinh Nhu, brother of President Ngo Dinh Diem, vandalises Buddhist pagodas across the country, arresting thousands and leaving an estimated hundreds dead.
  • 1971
    A bomb exploded in the Liberal Party campaign rally in Plaza Miranda, Manila, Philippines with several anti-Marcos political candidates injured.
  • 1976
    Operation Paul Bunyan at Panmunjeom, Korea.
  • 1986
    Carbon dioxide gas erupts from volcanic Lake Nyos in Cameroon, killing up to 1,800 people within a 20-kilometer range.
  • 1991
    Latvia declares renewal of its full independence after the occupation of Soviet Union.
  • 1992
    Ruby Ridge Standoff in Idaho
  • 1993
    NASA loses contact with the Mars Observer spacecraft.
  • 2001
    NATO decides to send a peace-keeping force to the former Yugoslav Republic of Macedonia.

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