The phrase "11 september 2025 to today" is a prepositional phrase that functions primarily as an adverbial phrase of time. Its grammatical role is to modify a verb, adjective, or another adverb by specifying a duration or temporal range. This classification is based on its structure and its function within a larger sentence, where it answers the question "when?" or "for how long?".
This determination is derived from a grammatical analysis of its components. The phrase is constructed around the preposition "to," which establishes a relationship between a starting point and an endpoint. The starting point, "11 september 2025," is a noun phrase specifying a date. The endpoint, "today," acts as a temporal adverb or noun. The entire construction, a prepositional phrase, takes on an adverbial function by providing temporal context. For instance, in the sentence "The project's scope covers the period from 11 september 2025 to today," the phrase modifies the verb "covers" by defining its timeframe.
For the purposes of developing an article around this keyword, identifying it as an adverbial phrase is the key takeaway. This means the phrase is not a standalone subject (like a noun) but a modifier that provides context. Its purpose is to qualify an action or state by defining its temporal boundaries. While the phrase is grammatically sound, its semantic meaning describes a non-existent or negative time interval, as the start date is in the future relative to the end date ("today"). This logical paradox does not change its grammatical classification but is critical for its interpretation.