The term "11 sep vrat" functions as a noun phrase, with "vrat" being the head noun. "Vrat" () is a Sanskrit word meaning a religious vow, pious observance, or ritualistic fast undertaken for spiritual purposes. The preceding date, "11 sep," acts as a specific adjectival modifier, identifying the particular fast that occurs on September 11th according to the Gregorian calendar.
In the context of the Hindu lunisolar calendar, the specific observance that frequently falls on or around September 11th is Parivartini Ekadashi. This event occurs on the 11th lunar day (tithi) of the waxing moon (Shukla Paksha) in the Hindu month of Bhadrapada. The term "Parivartini" means "turning," as it is believed that on this day, Lord Vishnu, who is in a state of cosmic sleep (Yoga Nidra) for the four-month period of Chaturmas, turns over onto his other side. This Ekadashi is also known as Parsva Ekadashi or Vamana Ekadashi, as it is dedicated to the worship of Lord Vishnu's Vamana (dwarf) incarnation.
Therefore, the grammatical analysis of "11 sep vrat" as a noun phrase is essential because it frames the topic not as an action or a description, but as a specific, named religious event. The core subject is the "vrat" (the fast and its associated rituals), while the date serves to anchor this traditional, lunar-based observance to a fixed point in the civil calendar for easy reference. This distinction is fundamental to discussing the cultural and religious significance of the day's practices.
