In 2025, Patriots' Day will be observed on Monday, April 21. This specific date is the answer to the query. As the main point, this temporal locator functions as a proper noun phrase, identifying the day of observance for the state holiday in Massachusetts and Maine.
The date is determined by state law, which statutorily designates Patriots' Day as the third Monday in April. This system was adopted in Massachusetts in 1969 to create a consistent three-day weekend. The holiday commemorates the Battles of Lexington and Concord, which took place on April 19, 1775, and marked the beginning of the American Revolutionary War. While the historical anniversary is April 19, the official public observance is tied to the Monday holiday formula.
The practical and most prominent application of this date in Boston is its direct association with the Boston Marathon. The race has been held on Patriots' Day every year since 1897, leading to the holiday's popular nickname, "Marathon Monday." In addition to the marathon, the day is marked by historical reenactments of the battles in the towns of Lexington and Concord, parades, and other civic ceremonies, blending a major international sporting event with the commemoration of regional and national history.
