Constitution Day
September 17, Tuesday
Constitution Day (or Citizenship Day), is an American federal observance that recognizes the adoption of the United States Constitution and those who have become U.S. citizens. It is normally observed on September 17, the day in 1787 that delegates to the Constitutional Convention signed the document in Philadelphia.
Constitution Day in other years
- 2021 September 17, Friday
- 2022 September 17, Saturday
- 2023 September 17, Sunday
- 2025 September 17, Wednesday