Which earlier national celebration culminated on July 4, 1976, before America’s 2026 semiquincentennial?

The United States Bicentennial culminated on July 4, 1976, before America’s 2026 semiquincentennial.

The Bicentennial marked 200 years since the Second Continental Congress adopted the Declaration of Independence in 1776. It was not one single ceremony but a broad series of celebrations and observances held across the country during the 1970s.

The national commemoration was organized in stages by federal bodies, including the American Revolution Bicentennial Commission and the American Revolution Bicentennial Administration. President Gerald Ford took part in the central Independence Day observances in Philadelphia.

The relationship between the two milestones is numerical: 1976 marked 200 years, while 2026 marks 250 years. The 2026 event is therefore called a semiquincentennial rather than a bicentennial.