The United States Semiquincentennial marks the 250th anniversary of American independence on July 4, 2026.
The date follows the adoption of the Declaration of Independence by the Second Continental Congress on July 4, 1776. Independence Day is observed annually on July 4, so the 250th anniversary falls on that same calendar date in 2026.
The anniversary is often described as the 250th birthday of the United States, although the historical process of independence involved several important dates. Congress approved the Lee Resolution on July 2, 1776, while the Declaration's final wording was adopted on July 4. The document was signed by delegates over a later period.
The event is also called America250, the United States Semiquincentennial, the Sestercentennial, or the Quarter Millennium. The next major anniversary after it will be the Tricentennial in 2076.