The core of the query is the proper noun phrase "Patriots' Day 2025 in MA." The term functions as the subject of an interrogative clause initiated by the adverb "when." This grammatical structure establishes that the primary objective is to identify a specific point in timea dateassociated with the named event and location.
In 2025, Patriots' Day will be observed in Massachusetts on Monday, April 21. The date is determined by state law, which designates the holiday to be celebrated on the third Monday in April each year. For April 2025, the Mondays fall on the 7th, 14th, and 21st, making the 21st the third Monday of the month.
This state holiday commemorates the anniversary of the Battles of Lexington and Concord, the initial armed engagements of the American Revolutionary War. In modern practice, its most prominent association is with the annual running of the Boston Marathon, which is traditionally held on this day, attracting participants and spectators from around the world.
