The keyword "Wochentag" is a German compound noun. It is composed of "Woche," meaning "week," and "Tag," meaning "day." Therefore, "Wochentag" translates directly to "weekday" or "day of the week." In the complete phrase, the date "11. September 2025" acts as a specifier or adjectival modifier for this noun. The entire expression functions as a noun phrase, with the noun "Wochentag" being the central element for which information is sought.
The purpose of this grammatical construction is to query the specific day of the week for the provided date. By calculation or calendar reference, September 11, 2025, is a Thursday. The corresponding German term for Thursday is "Donnerstag." The query structure, [Date] + [Noun], is a highly efficient linguistic and search-engine-optimized method for requesting a specific attribute (the day of the week) related to a precise point in time (the date).
In practice, the grammatical analysis identifies the user's intent. The request is for the specific instance of the noun "Wochentag" as defined by the date. The resolution to this query is the value that satisfies the noun phrase: Thursday (Donnerstag). The grammatical form directly dictates the type of information required for a complete answer.
