The entire phrase functions as a proper noun. This grammatical classification is used because the term names a specific, unique event, distinguishing it from general occurrences or concepts.
A detailed analysis of its components shows a compound structure. The core is the noun "Day," which is modified by the noun adjunct "Media" to specify its function. "Patriot League," itself a proper noun, acts in an adjectival capacity to identify the organizing body. The numeral "2025" serves to specify the exact annual instance of the event. The combination of these elements creates a single, cohesive name for a particular occasion.
Understanding this term as a proper noun is fundamental for its correct usage. It dictates that the phrase should be capitalized consistently as the title of an event. Within a sentence, it will act as a subject or an object, not as a descriptive adjective or a verb. This grammatical foundation ensures precision and adherence to standard English conventions in the resulting article.