The term "Patriots Day date" functions as a noun phrase. In this construction, the head or main word is the noun "date." The proper noun "Patriots Day" acts as a noun adjunct, which is a noun used to modify another noun. Its grammatical role is adjectival, specifying which particular date is the subject.
A noun adjunct modifies the head noun by providing specific classification or context. In the phrase "Patriots Day date," "Patriots Day" narrows the general concept of "date" to a single, specific instance: the date associated with that holiday. This grammatical structure is common in English, as seen in examples like "government regulations" or "computer science," where the first noun specifies the type of the second noun. The entire phrase operates as a single unit to name a specific concept.
Understanding this grammatical function is crucial because it establishes that the central subject of the article is the specific calendar day. The modifier "Patriots Day" provides the necessary context, but the core focus should be on the temporal aspectthe exact date, how it is determined (e.g., the third Monday in April), and any related scheduling information. The article's main point is not the holiday in general, but its specific placement on the calendar.