The United States Semiquincentennial, or America250, will be observed in 2026.
The anniversary marks 250 years since the Second Continental Congress approved the Declaration of Independence in 1776. The central anniversary date is July 4, 2026, which is also the 250th anniversary of the Independence Day tradition associated with the Declaration.
The celebration follows earlier major milestones: the centennial in 1876, the sesquicentennial in 1926, and the bicentennial in 1976. Each anniversary used a different name based on the number of years being commemorated.
A common mix-up is treating 1776 itself as the anniversary year. It is the founding year being remembered; 2026 is the year in which 250 years have elapsed. The term semiquincentennial refers to a 250th anniversary, while America250 is the branding used for the nationwide commemoration.