Inauguration Day is the day when the President of the United States officially takes office. This event occurs every four years on January 20th, following the presidential election. The ceremony typically includes the swearing-in of the new president, who takes an oath to uphold the Constitution, and is often attended by the outgoing president, members of Congress, and other dignitaries. The event is held at the U.S. Capitol in Washington, D.C., and is marked by various traditions, including the inaugural address, parades, and celebrations. Inauguration Day symbolizes the peaceful transfer of power, a fundamental principle of American democracy.