The United States Semiquincentennial, promoted by America250, falls on July 4, 2026.
The anniversary marks 250 years since the Second Continental Congress adopted the Declaration of Independence in 1776. The word “semiquincentennial” combines roots referring to half of 500 years, or 250 years. Other names include sestercentennial and quarter millennium, although semiquincentennial is the term used in the official celebration’s name.
America250 is the public-facing name associated with the United States Semiquincentennial Commission, a bipartisan federal organization established by Congress in 2016. Its work includes coordinating commemorations, educational activities, and celebrations across the country.
The date is sometimes confused with July 2, 1776, when Congress approved the Lee Resolution declaring independence. July 4 is the anniversary of the adoption and final approval of the Declaration’s text, the date traditionally observed as Independence Day.