Why Kolkata has its own Panchang
City of Joy and home of Maa Kali. Spiritual heart of Bengal with the most powerful Shakti Peetha at Kalighat.
Every timing on this site that matters — Rahu Kaal, Abhijit Muhurat, the moment a tithi turns, the window a puja should begin in — is derived from the Sun's position relative to a specific point on the earth. Kolkata sits at 22.57°N, 88.36°E. Serving it Delhi's sunrise would put every muhurat on the page out by minutes, and a muhurat that is out by minutes has stopped being a muhurat. So Trikaal Vaani computes Kolkata from Kolkata's own coordinates, using Swiss Ephemeris positions rather than tabulated approximations.
Local observance matters as much as local timing. Kalighat Kali Temple, Dakshineswar Kali Temple, Belur Math shape how festivals are actually kept in Kolkata, and the festival pages below carry those regional notes wherever practice diverges from the pan-India form.