The keyword term "september 11th time" functions as a noun phrase. In this construction, the headword is "time," which is a noun. The specific date, "september 11th," acts as an adjectival modifier, specifying the particular period being referenced.
Grammatically, the component "september 11th" is a proper noun used attributively to modify the noun "time." This is a common linguistic pattern where one noun modifies another to create a more specific concept (e.g., "kitchen counter," "winter season"). By positioning "september 11th" before "time," it defines the noun, narrowing its scope from a general concept of time to a specific historical, cultural, or political era associated with the events of that date.
Determining that this is a noun phrase is crucial because it establishes the article's main point as a concept or entity. The article will likely explore this "time" as a subjecta distinct period with unique characteristics, consequences, and a defined start, if not a clear end. The focus is not on the verb (an action) or an adjective (a description), but on the substantive idea of an era defined by the September 11th attacks, allowing for an analysis of its social, political, and historical dimensions.
