The United States Semiquincentennial, America's 250th anniversary, will be observed on July 4, 2026.
The date marks 250 years since the Second Continental Congress adopted the Declaration of Independence on July 4, 1776. The anniversary is commonly known as America250, while semiquincentennial is the formal word for a 250th anniversary.
The celebration follows the United States Bicentennial in 1976, which marked 200 years since independence. The next major national milestone will be the Tricentennial in 2076, marking 300 years.
A common mix-up is confusing July 4 with July 2, when Congress approved the Lee Resolution declaring the colonies independent. July 4 is the date the Declaration of Independence was adopted, and it became the enduring date for Independence Day and the 250th-anniversary observance.