The term "11 sep dinvishesh" is a Marathi phrase that functions grammatically as a noun phrase. It serves as a subject or title, referring to the concept of significant events that occurred on the date of September 11th. The core component, "dinvishesh," is a compound noun derived from "din" (day) and "vishesh" (special), translating to "the day's specialty" or, more idiomatically, "on this day in history."
In its application, the phrase designates a specific category of content that lists historical events, notable births and deaths, and anniversaries associated with a particular calendar date. For September 11th, this would include globally recognized events such as the 2001 terrorist attacks in the United States. Within an Indian context, it often highlights significant national events, such as the anniversary of Swami Vivekananda's speech at the Parliament of the World's Religions in Chicago (1893) and the birth anniversary of social reformer Vinoba Bhave (1895).
Therefore, when used as a keyword for an article or a search query, this noun phrase indicates a user's intent to access a curated compilation of historical facts for September 11th. It is the linguistic equivalent of the English content category "This Day in History," functioning as a label for information chronicling the historical significance of a specific date.