The core component of the query is the term "Patriots' Day," which functions grammatically as a proper noun. As a proper noun, it designates a specific, official holiday, distinguishing it from common nouns that refer to general categories. The remainder of the phrase, "what day is it," is an interrogative clause seeking specific informationthe dateassociated with this named entity.
Patriots' Day is a civic holiday observed on the third Monday in April in the states of Massachusetts and Maine. It commemorates the anniversary of the Battles of Lexington and Concord, the initial armed engagements of the American Revolutionary War, which occurred on April 19, 1775. The holiday was originally celebrated on the fixed date of April 19 but was shifted to the third Monday in 1969 to create a three-day weekend.
The observance of Patriots' Day on a floating Monday means its specific calendar date changes annually. For instance, it fell on April 15 in 2024 and will be on April 21 in 2025. This scheduling is significant as the holiday is culturally linked with major events, most notably the Boston Marathon, which has been traditionally held on this day since 1897. Understanding the term as a proper noun tied to a rule-based date (the third Monday) rather than a fixed numerical date is key to identifying its correct observance each year.