What earlier national anniversary did the United States Bicentennial culminate on July 4, 1976?

The United States Bicentennial culminated in the 200th anniversary of the Declaration of Independence’s adoption.

The celebration reached its main date on July 4, 1976, exactly two centuries after the Second Continental Congress approved the Declaration in Philadelphia. Events took place throughout the mid-1970s, including parades, exhibitions, fireworks, historical reenactments, and Operation Sail in New York Harbor.

Congress began formal Bicentennial planning in 1966 by creating the American Revolution Bicentennial Commission. That body initially considered a single large exposition, but the final approach emphasized locally organized events across the country.

The Bicentennial is a useful comparison for America250. The 1976 observance marked 200 years, while the 2026 Semiquincentennial marks 250. The Constitution’s signing anniversary is September 17, 1787, so it was not the event commemorated by the 1976 Independence Day milestone.