About August 20

August 20, 2025 is the 232nd day of the year 2025 in the Gregorian calendar. There are 133 days remaining until the end of this year. The day of the week is Wednesday.

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 181 days remaining before the start of the next Chinese New Year.

What Happened On August 20

  • 20
    Agrippa Postumus, adoptive-son of the late Roman Emperor Augustus, is executed by his guards while in exile under mysterious circumstances
  • 917
    Battle of Acheloos: Tsar Simeon I of Bulgaria decisively defeats a Byzantine army.
  • 1000
    The foundation of the Hungarian state by Saint Stephen. Today celebrated as a National Day in Hungary.
  • 1083
    Canonization of the first King of Hungary, Saint Stephen and his son Saint Emeric.
  • 1391
    Konrad von Wallenrode becomes the 24th Hochmeister of the Teutonic Order.
  • 1672
    Former Grand Pensionary Johan de Witt and his brother Cornelis are brutally murdered by an angry mob in The Hague.
  • 1710
    War of the Spanish Succession: a multinational army led by the Austrian commander Guido Starhemberg defeats the Spanish-Bourbon army commanded by the Marquis de Bay in the Battle of Saragossa.
  • 1775
    The Spanish establish the Presidio San Augustin del Tucson in the town that became Tucson, Arizona.
  • 1914
    World War I: German forces occupy Brussels.
  • 1926
    Japan’s public broadcasting company, Nippon Hōsō Kyōkai (NHK) is established.
  • 1940
    In Mexico City exiled Russian revolutionary Leon Trotsky is fatally wounded with an ice axe by Ramon Mercader. He dies the next day.
  • 1988
    “Black Saturday” of the Yellowstone fire in Yellowstone National Park
  • 1988
    The Troubles: Eight British Army soldiers are killed and 28 wounded when their bus is hit by a Provisional Irish Republican Army roadside bomb in Northern Ireland (see Ballygawley bus bombing).
  • 1989
    The O-Bahn in Adelaide, the world’s longest guided busway, opens.
  • 1989
    The pleasure boat Marchioness sinks on the River Thames following a collision, 51 people are killed.
  • 1991
    Dissolution of the Soviet Union, August Coup: more than 100,000 people rally outside the Soviet Union’s parliament building protesting the coup aiming to depose President Mikhail Gorbachev.
  • 1991
    Estonia, annexed by the Soviet Union in 1940, issues a decision on the re-establishment of independence on the basis of historical continuity of her pre-World War II statehood.
  • 1997
    Souhane massacre in Algeria; over 60 people are killed and 15 kidnapped.
  • 2002
    A group of Iraqis opposed to the regime of Saddam Hussein take over the Iraqi Embassy in Berlin for five hours before releasing their hostages and surrendering.
  • 2008
    Spanair Flight 5022, from Madrid to Gran Canaria, skids off the runway and crashes at Barajas Airport. 146 people are killed in the crash, and 8 more die later. Only 18 people survive.

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