All Events

Historical Events on September 17

  • Invasion of Canada (1775)

    1775

    American Revolutionary War: The Invasion of Canada begins with the Siege of Fort St. Jean.

  • Battle of Antietam

    1862

    American Civil War: George B. McClellan halts the northward drive of Robert E. Lee's Confederate Army in the single-day Battle of Antietam, the bloodiest day in American military history.

  • Invasion of Poland

    1939

    World War II: The Soviet Union joins Nazi Germany's invasion of Poland during the Polish Defensive War of 1939.

  • Operation Sea Lion

    1940

    World War II: Following Nazi Germany's defeat in the Battle of Britain, Hitler postpones Operation Sea Lion indefinitely.

  • Great Patriotic War

    1941

    World War II: A decree of the Soviet State Committee of Defense, restoring Vsevobuch in the face of the Great Patriotic War, is issued.

  • Operation Market Garden

    1944

    World War II: Allied Airborne troops parachute into the Netherlands as the "Market" half of Operation Market Garden.

  • Grenada

    1974

    Bangladesh, Grenada and Guinea-Bissau join the United Nations.

  • Federated States of Micronesia

    1991

    Estonia, North Korea, South Korea, Latvia, Lithuania, the Marshall Islands and Micronesia join the United Nations.

  • September 11 attacks

    2001

    The New York Stock Exchange reopens for trading after the September 11 attacks, the longest closure since the Great Depression.