The United States will celebrate its semiquincentennial on July 4, 2026.
That date is 250 years after July 4, 1776, the day associated with the adoption of the Declaration of Independence. Independence Day is observed annually on July 4, so the 250th anniversary aligns with the country’s regular national holiday rather than requiring a separate commemorative date.
The celebration is often called America250. It marks a major national anniversary and is intended to connect the Revolutionary era with later developments in American history, culture, science, and civic life.
The date can be confused with 2025 or 2027 because anniversary planning and related events span multiple years. The exact 250-year interval, however, ends on July 4, 2026.