The keyword phrase functions grammatically as a complex noun phrase or a nominal clause. Its primary role is to name a topic of inquiry, specifically seeking information about the operational status of institutions and businesses on a particular civic holiday. The core components are a proper noun ("Patriots Day"), a temporal modifier ("2025"), and an interrogative clause ("what is closed"), which collectively define the subject matter.
Patriots' Day, observed on the third Monday of April, is a state-level holiday, not a federal one. Consequently, its impact on closures is geographically specific, primarily affecting Massachusetts and Maine, with some school districts in Wisconsin also observing the day. On April 21, 2025, in these specific jurisdictions, closures will typically include state, county, and municipal government offices; public schools and libraries; and many state-regulated services like the Registry of Motor Vehicles (RMV). Conversely, federal entities such as the U.S. Postal Service and federal courts will remain open and operational. The status of private businesses, including banks and retail stores, varies; while many national chains operate normally, some local businesses may close or have reduced hours, especially those located along the Boston Marathon route.
In practical application, determining an entity's operational status for this holiday requires consideration of its governing authority and location. If the entity is a federal agency, it will be open nationwide. If it is a state or local government service within Massachusetts or Maine, it will almost certainly be closed. For any private sector business, direct verification of its specific holiday hours is the most reliable approach, as private company policies are not uniformly dictated by the observance of state holidays.
