About September 13

September 13, 2025 is the 256th day of the year 2025 in the Gregorian calendar. There are 109 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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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 157 days remaining before the start of the next Chinese New Year.

What Happened On September 13

  • 585 BC
    Lucius Tarquinius Priscus, king of Rome, celebrates a triumph for his victories over the Sabines, and the surrender of Collatia.
  • 509 BC
    The Temple of Jupiter Optimus Maximus on Rome’s Capitoline Hill is dedicated on the ides of September.
  • 1213
    End of Battle of Muret, during the Albigensian Crusade to destroy the Cathar heresy.
  • 1229
    Ögedei Khan is proclaimed Khagan of the Mongol Empire in Kodoe Aral, Khentii: Mongolia.
  • 1584
    San Lorenzo del Escorial Palace in Madrid is finished.
  • 1609
    Henry Hudson reaches the river that would later be named after him – the Hudson River.
  • 1788
    The Philadelphia Convention sets the date for the first presidential election in the United States, and New York City becomes the country’s temporary capital.
  • 1791
    King Louis XVI of France accepts the new constitution.
  • 1812
    War of 1812: A supply wagon sent to relieve Fort Harrison is ambushed in the Attack at the Narrows.
  • 1914
    World War I: South African troops open hostilities in German south-west Africa (Namibia) with an assault on the Ramansdrift police station.
  • 1922
    The final act of the Greco-Turkish War, the Great Fire of Smyrna, commences.
  • 1923
    Following a military coup in Spain, Miguel Primo de Rivera takes over, setting up a dictatorship.
  • 1935
    Rockslide near Whirlpool Rapids Bridge ends the International Railway (New York – Ontario).
  • 1942
    World War II: Second day of the Battle of Edson’s Ridge in the Guadalcanal campaign. U.S. Marines successfully defeated attacks by the Imperial Japanese Army with heavy losses for the Japanese forces.
  • 1964
    South Vietnamese Generals Lam Van Phat and Duong Van Duc fail in a coup attempt against General Nguyen Khanh.
  • 1979
    South Africa grants independence to the “homeland” of Venda (not recognised outside South Africa).
  • 1987
    Goiânia accident: A radioactive object is stolen from an abandoned hospital in Goiânia, Brazil, contaminating many people in the following weeks and causing some to die from radiation poisoning.
  • 1989
    Largest anti-Apartheid march in South Africa, led by Desmond Tutu.
  • 1994
    Ulysses probe passes the Sun’s south pole.
  • 2008
    Hurricane Ike makes landfall on the Texas Gulf Coast of the United States, causing heavy damage to Galveston Island, Houston and surrounding areas.

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