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Constitution Day on September 17

September 17 is Constitution Day, commemorating the formation and signing of the U.S. Constitution by thirty-nine brave men on September 17, 1787. It recognizes all who, born in the United States or by naturalization, have become citizens. In 2004, under Senator Robert Byrd's urging, Congress changed the designation of this day to "Constitution Day and Citizenship Day." You can learn more about the U.S. Constitution on the U.S. National Archives website.

  • The National Archives Museum is hosting an online event on Friday, September 17, 2021, "The People’s Constitution: 200 Years, 27 Amendments, and the Promise of a More Perfect Union." Authors John Kowal and Wilfred Codrington III will discuss how generations have reshaped our founding document—the U.S. Constitution—amid some of the most colorful, contested, and controversial battles in American political life. It’s a story of how We the People have improved our government’s structure and expanded the scope of our democracy during eras of transformational social change.
  • You can also learn fun facts about the U.S. Consitution.

Important Dates