The phrase "11 september 2025 ko kya tithi hai" is not a single part of speech but functions as a complete and grammatically correct interrogative sentence in the Hindi language. Its primary grammatical function is to ask a direct question. As a complete clause, it contains a subject (implied), an object of inquiry, and a verb, forming a full interrogative construction rather than a simple noun phrase, verb, or adjective.
A detailed grammatical analysis of the sentence reveals its components. "11 september 2025" serves as an adverbial phrase of time. The word "ko" is a postposition indicating the specific point in time the question refers to. "Kya" is an interrogative pronoun meaning "what." The central noun in the query is "tithi," which refers to a lunar day in the Hindu lunisolar calendar. A tithi is the time it takes for the longitudinal angle between the Moon and the Sun to increase by 12 degrees. Finally, "hai" is the verb, the present indicative form of "to be," equivalent to "is" in English. Together, these elements form the question: "What is the lunar day on September 11, 2025?"
In practical application, this interrogative sentence seeks specific astronomical and calendrical data from the Hindu Panchang. The answer to the query is that on September 11, 2025, the predominant tithi is Shukla Paksha Chaturthi of the Bhadrapada month. This tithi, the fourth lunar day of the waxing phase of the moon, is in effect for the majority of the day before transitioning to the next tithi, Panchami, late in the day according to most standard time zones.
