What was the United States’ previous major national anniversary celebration, held in 1976?

The United States’ previous major national anniversary celebration, held in 1976, was the United States Bicentennial. It marked 200 years since the adoption of the Declaration of Independence in 1776.

The Bicentennial was not a single ceremony but a nationwide series of celebrations, exhibitions, parades, sporting events, and historical programs. Its culminating date was July 4, 1976, when communities across the country celebrated the anniversary of independence.

The 1976 observance became an important reference point for planning America’s 250th anniversary. Events included the American Freedom Train, Operation Sail in New York Harbor, fireworks, and a visit by Queen Elizabeth II and Prince Philip. The 2026 Semiquincentennial is therefore the next quarter-millennium milestone after the Bicentennial.