The term "Patriots' Day North Dakota" functions as a proper noun phrase. In this construction, "Patriots' Day" is the primary proper noun, identifying a specific holiday, while "North Dakota" acts as a geographic modifier, specifying the location of inquiry. The entire phrase refers to the concept or status of this particular holiday within the state of North Dakota.
Patriots' Day is a state holiday in Massachusetts, Maine, and Wisconsin, observed on the third Monday of April to commemorate the anniversary of the Battles of Lexington and Concord, the first armed conflicts of the American Revolutionary War. However, North Dakota does not officially recognize or observe Patriots' Day as a legal state holiday. The state's official list of public holidays, as defined by the North Dakota Century Code, does not include this observance.
Consequently, the practical application is that state and local government offices, public schools, and most businesses in North Dakota operate on a normal schedule on the day Patriots' Day is observed elsewhere. The phrase primarily serves to clarify the non-observance of this regional holiday within the state, distinguishing its legal status from that of states where it is officially celebrated.