The core component of the keyword phrase "moon in 11 september 2025" is the word "moon," which functions as a noun. The entire phrase itself is a noun phrase, where the noun "moon" is the head, and it is post-modified by the prepositional phrase "in 11 september 2025."
Grammatically, the prepositional phrase "in 11 september 2025" acts as an adjectival modifier. It specifies a particular temporal context for the noun, answering the question "which moon?" or "the moon at what specific time?". This structure establishes the "moon" as the primary subject, with the date serving as a crucial qualifier that narrows the topic to a specific instance or state of that subject.
For the purpose of an article, this grammatical analysis is critical. It determines that the article's main point must be the celestial body (the noun "moon") and its specific attributes, such as its phase, position, visibility, or associated astronomical events, on the precise date provided. The content should describe the state of the noun, as defined by its modifier.