About September 17
September 17, 2021 is the 260th day of the year 2021 in the Gregorian calendar. There are 105 days remaining until the end of this year. The day of the week is Friday.
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 137 days remaining before the start of the next Chinese New Year.
What Happened On September 17
- 1111 –Highest Galician nobility led by Pedro Fróilaz de Traba and the bishop Diego Gelmírez crown Alfonso VII as “King of Galicia”.
- 1630 –The city of Boston, Massachusetts is founded.
- 1683 –Antonie van Leeuwenhoek writes a letter to the Royal Society describing “animalcules”: the first known description of protozoa.
- 1778 –The Treaty of Fort Pitt is signed. It is the first formal treaty between the United States and a Native American tribe (the Lenape or Delaware Indians).
- 1809 –Peace between Sweden and Russia in the Finnish War. The territory to become Finland is ceded to Russia by the Treaty of Fredrikshamn.
- 1814 –Francis Scott Key finishes his poem “Defence of Fort McHenry”, later to be the lyrics of “The Star-Spangled Banner”.
- 1862 –American Civil War: The Allegheny Arsenal explosion results in the single largest civilian disaster during the war.
- 1894 –The Battle of Yalu River, the largest naval engagement of the First Sino-Japanese War.
- 1914 –Andrew Fisher becomes Prime Minister of Australia for the third time.
- 1916 –World War I: Manfred von Richthofen (“The Red Baron”), a flying ace of the German Luftstreitkräfte, wins his first aerial combat near Cambrai, France.
- 1920 –The American Professional Football Association (later renamed National Football League) is organized in Canton, Ohio, United States.
- 1943 –World War II: The Russian city of Bryansk is liberated from Nazis.
- 1948 –The Lehi (also known as the Stern gang) assassinates Count Folke Bernadotte, who was appointed by the UN to mediate between the Arab nations and Israel.
- 1974 –Bangladesh, Grenada and Guinea-Bissau join the United Nations.
- 1976 –The first Space Shuttle, Enterprise, is unveiled by NASA.
- 1978 –The Camp David Accords are signed by Israel and Egypt.
- 1980 –After weeks of strikes at the Lenin Shipyard in Gdańsk, Poland, the nationwide independent trade union Solidarity is established.
- 1991 –Estonia, North Korea, South Korea, Latvia, Lithuania, the Marshall Islands and Micronesia join the United Nations.
- 1992 –An Iranian Kurdish leader and his two joiners are assassinated by political militants in Berlin, Germany.
- 1993 –Last Russian troops leave Poland.
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