The Tricentennial follows the United States Semiquincentennial in the national anniversary sequence.
A tricentennial marks 300 years, so the next comparable national milestone after 2026 is expected in 2076. The prefix “tri-” means three, while “centennial” refers to a period of 100 years.
The sequence is easiest to understand as 100 years for the Centennial in 1876, 150 years for the Sesquicentennial in 1926, 200 years for the Bicentennial in 1976, 250 years for the Semiquincentennial in 2026, and 300 years for the Tricentennial in 2076.
These labels describe anniversary intervals; they do not necessarily identify one particular event, building, or government program.