In 2025, Patriots' Day in Boston will be observed on Monday, April 21. The date is officially designated as the third Monday in April within the Commonwealth of Massachusetts, causing it to fall on a different specific date each year.
The holiday commemorates the anniversary of the Battles of Lexington and Concord, the initial armed conflicts of the American Revolutionary War, which took place on April 19, 1775. Although historically tied to the specific date of April 19, Massachusetts state law was amended in 1969 to move the official observance to the third Monday of the month. This legislative change was part of a broader movement to create more three-day weekends for federal and state holidays.
This date holds significant practical importance for the city of Boston as it corresponds with several major annual events. The Boston Marathon is famously run on Patriots' Day each year, meaning the 129th race will occur on April 21, 2025. The day is also marked by a traditional morning home game for the Boston Red Sox at Fenway Park and various historical reenactments in the nearby towns of Lexington and Concord.
