About August 18

August 18, 2025 is the 230th day of the year 2025 in the Gregorian calendar. There are 135 days remaining until the end of this year. The day of the week is Monday.

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

What Happened On August 18

  • 1201
    The city of Riga is founded.
  • 1572
    Marriage in Paris of the future Huguenot King Henry IV of Navarre to Marguerite de Valois, in a supposed attempt to reconcile Protestants and Catholics.
  • 1590
    John White, the governor of the Colony of Roanoke, returns from a supply trip to England and finds his settlement deserted.
  • 1838
    The Wilkes Expedition, which would explore the Puget Sound and Antarctica, weighs anchor at Hampton Roads in 1838
  • 1864
    American Civil War: Battle of Globe Tavern – Union forces try to cut a vital Confederate supply-line into Petersburg, Virginia, by attacking the Wilmington and Weldon Railroad.
  • 1868
    French astronomer Pierre Jules César Janssen discovers helium.
  • 1877
    Asaph Hall discovers Martian moon Phobos.
  • 1903
    German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright Brothers.
  • 1917
    A Great Fire in Thessaloniki, Greece destroys 32% of the city leaving 70,000 individuals homeless.
  • 1938
    The Thousand Islands Bridge, connecting New York State, United States with Ontario, Canada over the St. Lawrence River, is dedicated by U.S. President Franklin D. Roosevelt.
  • 1948
    The Australian cricket team completed a 4–0 Ashes series win over England during their undefeated Invincibles tour.
  • 1958
    Vladimir Nabokov’s controversial novel Lolita is published in the United States.
  • 1963
    American civil rights movement: James Meredith becomes the first black person to graduate from the University of Mississippi.
  • 1965
    Vietnam War: Operation Starlite begins – United States Marines destroy a Viet Cong stronghold on the Van Tuong peninsula in the first major American ground battle of the war.
  • 1966
    Vietnam War: the Battle of Long Tan ensues after a patrol from the 6th Battalion, Royal Australian Regiment clashes with a Viet Cong force in Phuoc Tuy Province.
  • 1976
    In the Korean Demilitarized Zone at Panmunjeom, the Axe Murder Incident results in the death of two US soldiers.
  • 1989
    Leading presidential hopeful Luis Carlos Galán is assassinated near Bogotá in Colombia.
  • 2000
    A federal jury finds the US EPA guilty of discrimination against Dr. Marsha Coleman-Adebayo, under the Civil Rights Act of 1964, later inspiring passage of the No FEAR Act.
  • 2005
    A Massive power blackout hits the Indonesian island of Java, affecting almost 100 million people, the largest and most widespread power outage in history.
  • 2008
    President of Pakistan Pervez Musharaf resigns due to the threat of impeachment.

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