The keyword phrase functions as an interrogative noun phrase, with its core element being the proper noun "Patriot Day." The purpose of the phrase is to identify a specific date, which is also a noun. In 2025, Patriots' Day in Massachusetts will be observed on Monday, April 21.
The date is determined by state law. According to Massachusetts General Laws, Chapter 4, Section 7, Clause 18 and Chapter 6, Section 12X, the holiday is officially observed on the third Monday in April. For the year 2025, the first Monday of April is April 7, the second is April 14, and therefore the third Monday falls on April 21.
As a public holiday in Massachusetts and Maine, this observance creates a three-day weekend. The date is most widely known for its association with the Boston Marathon, which is traditionally held on this day each year. Consequently, planning for travel, business closures, and participation in or spectating of the marathon relies on accurately identifying this specific Monday.
