September 17, Constitution Day, or Citizens Day is an American federal observance that recognizes the adoption of the United States Constitution and those who have become U.S. citizens. Constitution day is typically observed during the week of September 17, in remembrance of the day in 1787 that delegates to the Constitutional Convention signed the document in Philadelphia.
We encourage the Â鶹ÊÓƵ community to learn more about the history of Constitution Day, page. To learn more about the U.S. Constitution, visit .