The phrase "11 september 2025 kaun sa din hai" is not a single part of speech; it is a complete grammatical unit known as an interrogative sentence. Its function is to ask a direct question, specifically inquiring about the day of the week corresponding to the date September 11, 2025.
A detailed grammatical breakdown reveals its structure. "11 september 2025" functions as a proper noun phrase, acting as the subject of the sentence. The phrase "kaun sa" is an interrogative determiner (meaning "which") that modifies the noun "din" (day). The word "hai" is the verb, specifically the present indicative form of "to be" (is). Together, these components form a standard question structure in Hindi: [Subject] [Interrogative Determiner + Noun] [Verb]?
For the purpose of an article where this phrase is the keyword, it should be treated as a nominal clause or a query. In this context, the entire question acts like a noun that represents the central topic or problem to be solved. The article's main point is to provide the answer to this specific inquiry, making the keyword the subject matter itself rather than a simple noun, verb, or adjective within a larger sentence.
