About September 12

September 12, 2023 is the 255th day of the year 2023 in the Gregorian calendar. There are 110 days remaining until the end of this year. The day of the week is Tuesday.

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

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

According to the lunisolar Chinese calendar, there are 151 days remaining before the start of the next Chinese New Year.

What Happened On September 12

  • 1229
    The Aragonese army under the command of James I of Aragon disembarks at Santa Ponça, Majorca, with the purpose of conquering the island.
  • 1814
    Battle of North Point: an American detachment halts the British land advance to Baltimore in the War of 1812.
  • 1847
    Mexican-American War: the Battle of Chapultepec begins.
  • 1848
    Switzerland becomes a Federal state.
  • 1885
    Arbroath 36–0 Bon Accord, a world record scoreline in professional football.
  • 1910
    Premiere performance of Gustav Mahler’s Symphony No. 8 in Munich (with a chorus of 852 singers and an orchestra of 171 players. Mahler’s rehearsal assistant conductor was Bruno Walter)
  • 1933
    Leó Szilárd, waiting for a red light on Southampton Row in Bloomsbury, conceives the idea of the nuclear chain reaction.
  • 1938
    Adolf Hitler demands autonomy and self-determination for the Germans of the Sudetenland region of Czechoslovakia.
  • 1942
    World War II: RMS Laconia, carrying civilians, Allied soldiers and Italian POWs is torpedoed off the coast of West Africa and sinks with a heavy loss of life.
  • 1944
    World War II: The liberation of Serbia from Nazi Germany and the Chetniks continues. Bajina Bašta in western Serbia is among those liberated cities. Near Trier, American troops enter Germany for the first time.
  • 1959
    The Soviet Union launches a large rocket, Lunik II, at the moon.
  • 1977
    South African anti-apartheid activist Steve Biko is killed in police custody.
  • 1980
    Military coup in Turkey.
  • 1988
    Hurricane Gilbert devastates Jamaica; it turns towards Mexico’s Yucatán Peninsula 2 days later, causing an estimated $5 billion in damage.
  • 1990
    The two German states and the Four Powers sign the Treaty on the Final Settlement With Respect to Germany in Moscow, paving the way for German re-unification.
  • 1992
    Abimael Guzmán, leader of the Shining Path, is captured by Peruvian special forces; shortly thereafter the rest of Shining Path’s leadership fell as well.
  • 1999
    Indonesia announces it will allow international peace-keepers into East Timor.
  • 2001
    Ansett Australia, Australia’s first commercial interstate airline, collapses due to increased strain on the international airline industry, leaving 10,000 people unemployed.
  • 2007
    Former Philippine President Joseph Estrada is convicted of the crime of plunder.
  • 2008
    The 2008 Chatsworth train collision in Los Angeles between a Metrolink commuter train and a Union Pacific freight train kills 25 people.

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