Choghadiya and North Panchang for Patna
Patna (Bihār) lies at 25.5940°N, 85.1376°E. Choghadiya times are calculated by dividing the period from sunrise to sunset into 8 equal parts (daytime Choghadiya) and the night from sunset to next sunrise into 8 parts (night Choghadiya). Each part has a name — Amrit, Shubh, Labh, Char, Udveg, Rog, Kaal — assigned according to the day of the week. Since India observes a single time zone (IST), the actual solar sunrise in Patna may differ from Delhi by up to 25 minutes, making local calculation important.