The term "Patriot Day Proclamation" is a noun phrase. The core grammatical element is the noun "proclamation," which signifies a formal public announcement or official declaration. The words "Patriot Day" function as a proper noun acting as an adjectival modifier (a noun adjunct), specifying the precise subject and occasion of the proclamation.
This phrase refers to the official, formal instrument issued by the President of the United States to designate September 11th as "Patriot Day." Such a document serves as a national day of remembrance for the individuals killed in the terrorist attacks of September 11, 2001. A key directive within this annual issuance is the call for all U.S. flags to be flown at half-staff at homes, on the White House, and on all U.S. government buildings and establishments, both domestically and abroad. It also typically asks Americans to observe a moment of silence to honor the victims.
In practice, the proclamation is a directive that carries the weight of executive authority, compelling action within the federal government and serving as a powerful, official call to action for the public. It formalizes a national act of mourning and remembrance, providing a consistent, unified framework for civic observance. The recurring nature of the proclamation reinforces the event's significance in the nation's history and ensures its commemoration is an established part of the American civic calendar.