The phrase "11 sep to today" is a prepositional phrase that functions as a modifier within a sentence. It is not a singular part of speech like a noun or verb. Its primary grammatical role is to specify a duration of time, which makes it either an adverbial or adjectival phrase depending on its context.
This phrase is constructed from a preposition ("to") that links two temporal points, which function as its objects: the starting point ("11 sep") and the ending point ("today"). When this phrase modifies a verb, it acts as an adverbial phrase of time, indicating the period during which an action occurred (e.g., "Data was collected from 11 sep to today."). When it modifies a noun, it serves as an adjectival phrase, specifying the noun's temporal scope (e.g., "The analysis covering 11 sep to today is complete.").
For practical application in content analysis or data querying, the most accurate and useful classification is as an adverbial phrase of time. This interpretation correctly identifies the phrase's core function: to delimit the temporal scope of an event, action, or set of information. Understanding it as a time-based adverbial modifier is essential for processing the user's intent to filter results within a specific, ongoing date range.
