The inauguration of the President of the United States is a quadrennial event that marks the commencement of a new four-year presidential term. Inauguration Day is held on January 20th following a presidential election, unless January 20th falls on a Sunday, in which case the inauguration is held on January 21st. The inauguration ceremony takes place at the U.S. Capitol Building in Washington, D.C., and is attended by the outgoing and incoming presidents, as well as other dignitaries and guests.
The inauguration ceremony is a significant event in American history and is steeped in tradition. The first inauguration was held in 1789, when George Washington was sworn in as the first President of the United States. Since then, every president has been inaugurated on January 20th, with the exception of a few instances when the date was changed due to extenuating circumstances.