Constitution Day and Citizenship Day 2021

Constitution Day is September 17, 2021

What is Constitution Day?

Constitution Day and Citizenship 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 observed on September 17, the day the U.S. Constitutional Convention signed the Constitution in 1787.

Many other countries around the world also hold a Constitution Day to honor their constitutions. See this list of Constitution Days worldwide for more information.

Land Acknowledgement

We ask for those exploring the meaning of Constitution Day and Citizenship Day to reflect on the lands on which we reside and to acknowledge all of the ancestral homelands and traditional territories of Indigenous peoples who have been here since time immemorial.

City University of Seattle acknowledges that we live and work on indigenous land: the traditional and unceded territory of Coast Salish peoples, specifically the Duwamish Tribe (Dkhw Duw’Absh).

The Constitution, a founding document of the United States, was written in Philadelphia over the course of five months in 1787. We acknowledge that the U.S. Constitution was written and signed on the homelands of the Lenape people, the indigenous people who were forced from their homelands under threat of violence in the 18th century as a result of the European colonization of that land.

Acknowledging the ceded and unceded land on which we all stand could not be more important in our current historical moment. We encourage you to consult Native Land to learn more.

This land acknowledgement is based on text published by the University of Washington Libraries


Read the full text of the United States Constitution or explore in-depth with The Interactive Constitution made by the National Constitution Center

View high-quality facsimiles of America’s Founding Documents – the Declaration of Independence, the Constitution, and the Bill of Rights – courtesy of the National Archives.

Listen to a Constitution Read Aloud at the University of Washington, Seattle (2020)


The Constitution is “the supreme law of the land,” and as such, impacts many facets of American society. Often, controversial political topics stem from our collective and individual interpretations of the United States Constitution.

Interested in becoming more informed around these issues?

The CityU Library subscribes to Points of View, a database providing informed views of each side of contemporary social issues. Topics include but are not limited to:

Want a more historical viewpoint?

Delve into the video series Shaping America hosted by Academic Video Online. For a window into the creation of the Constitution, start with Lesson 10, “Inventing a Nation.”


Find answers to common questions about voting in the United States at Voting and Elections

Check your voter registration status and Register to Vote here.

Learn more about US Citizenship, including the rights and responsibilities of being a citizen.