1787CE
Politics
U.S. Constitution Signed
Delegates at the Constitutional Convention in Philadelphia sign the United States Constitution, establishing the framework for the federal government that endures to this day.
Daily Chronicle
September 17
5 Historical Records
1826CE
Birth
Bernhard Riemann Born
Bernhard Riemann was a German mathematician who made profound contributions to analysis, number theory, and differential geometry. His work on Riemannian geometry laid the mathematical foundation for Einstein's theory of general relativity, and the Riemann Hypothesis remains one of the greatest unsolved problems in mathematics.
1939CE
War
Soviets Invade Poland
The Soviet Union invades Poland from the east during the early days of World War II.
1978CE
Politics
Camp David Accords
Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin sign the Camp David Accords.
2011CE
Politics
Occupy Wall Street Begins
The Occupy Wall Street movement begins in Zuccotti Park in New York City, protesting economic inequality.