In 2025, Patriots' Day will be observed on Monday, April 21st. The holiday is statutorily set as the third Monday in April in the states where it is officially recognized, primarily Massachusetts and Maine.
Patriots' Day commemorates the Battles of Lexington and Concord, which were the first military engagements of the American Revolutionary War on April 19, 1775. While originally celebrated on the fixed date of April 19th, Massachusetts changed its observance in 1969 to the third Monday of the month. This change aligns the holiday with the federal Uniform Monday Holiday Act, creating a three-day weekend.
The most prominent practical application of this observance is its association with the Boston Marathon, which has been held on Patriots' Day every year since 1897. Because the holiday falls on a Monday, the specific date changes annually, landing between April 15th and April 21st. For the year 2025, that specific date is April 21st.
