On what date was the United States Semiquincentennial observed in 2026?

The United States Semiquincentennial was observed on July 4, 2026.

The anniversary marks 250 years since the Second Continental Congress adopted the Declaration of Independence on July 4, 1776. Because the anniversary falls on the same calendar date, Independence Day is the central date for America250 observances.

The term “semiquincentennial” means a 250th anniversary. America250 is the public-facing name used for many national programs, while “United States Semiquincentennial” is the formal historical description. The anniversary is distinct from the 1976 Bicentennial, which marked 200 years since the Declaration’s adoption.

July 4 is sometimes confused with August 2, the date generally associated with the signing of the engrossed Declaration by most delegates. America250 commemorates the 1776 adoption and declaration of independence, making July 4 the principal anniversary date.