21 significant historical events occurred on September 17. September 17 has been the date of several key military and political events throughout history. On this day in 1809, the Treaty of Fredrikshamn was signed, ending the Finnish War between Russia and Sweden. In 1862, the Battle of Antietam occurred during the American Civil War. During World War II in 1943, the Allies invaded Italy on this date. Other notable events include the 1894 Battle of the Yalu River and the 1961 West German federal election.
Total Events
21
Time Span
1197–2024
Categories
4
Top Category
war
15 events
20 famous birthdays on September 17
Including Christian Lange, Narendra Modi, Sergej Barbarez
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Event Distribution by Century
Darker = Higher Density12th C.21st C.
12th Century
1 event14th Century
2 events15th Century
3 events17th Century
2 events18th Century
2 events19th Century
6 events20th Century
4 events21st Century
1 eventExplore More for September 17
Discover births, deaths, and deeper historical trends for this date.