Constitution Day Constitution Day Fall 2023, by University of Hawai‘i–West O‘ahu CC0 1.0 DEED, via flickr The Constitution of the United States Three Branches of Government Handouts + Add to Google Calendar + iCal / Outlook export Date Sep 17 2025 Time All Day Local Time Timezone: America/New_York Date: Sep 17 2025 Time: All Day Category Holiday Share this event