The United States Tricentennial is listed as 2076, the next major anniversary after the 2026 Semiquincentennial.
A tricentennial marks a 300th anniversary. Since the Declaration of Independence dates to 1776, adding 300 years produces 2076. The 2026 celebration is the semiquincentennial, a 250th anniversary, so the two milestones are separated by 50 years.
The naming can cause confusion because “semiquincentennial” is an uncommon term. It combines “semi,” meaning half, with “quincentennial,” a 500th anniversary; together, it denotes 250 years. The 1976 celebration, by contrast, was the United States Bicentennial, marking 200 years.
The 2026 anniversary commemorates the Declaration of Independence and is centered on July 4. The 2076 tricentennial would mark three centuries from 1776, although its eventual program, organizers, and official branding have not yet been determined.