Home Constitution Day Constitution Day Celebrate Constitution Day with your students! Celebrate Constitution Day by exploring the history, purpose, and legacy of the Constitution of the United States. On September 17, 1787, delegates from the newly-formed states signed the Constitution of the United States. Congress passed a law to commemorate the day as “Citizenship Day” in 1952, and a new law renamed the holiday “Constitution Day” in 2004. A DE Subscription is required for this resource. + Add to Google Calendar + iCal / Outlook export Date Sep 18 2022 Expired! Time All Day Labels Exclusive to Current Partners Share this event