The keyword phrase functions grammatically as a compound proper noun. It identifies the specific convergence of the civic holiday observed in Massachusetts, Patriots' Day, and the academic institution, Boston University. This relationship is primarily defined by the university's location and its institutional response to the holiday's main event, the Boston Marathon.
The university's Charles River Campus is situated directly along the Boston Marathon route, specifically on Commonwealth Avenue between miles 24 and 25. As a result, the institution cancels all classes on Patriots' Day, officially recognizing it as a university holiday. This suspension of academic activities facilitates a major cultural tradition for the student body, who gather in large numbers along the race course to spectate and support the runners. This convergence of a major public event with the university's physical and academic calendar makes the day a defining experience for the campus community.
Ultimately, the term signifies a unique cultural and logistical intersection where civic tradition and university life merge. It represents an annual event where the university's campus transforms from a place of study into a primary viewing location for one of the world's most famous marathons. The practical application of this relationship is the establishment of a significant, shared experience that deeply integrates the university community into the broader cultural fabric of the city of Boston.