Work out hindu panchang tithi instantly with clear inputs, formula shown and shareable results.
A tithi is each twelve degrees of elongation between the Moon and the Sun, so the tithi number is the elongation divided by twelve, with the first fifteen forming the waxing paksha. Because tithis depend on true rather than mean lunar motion, they can run from about 19 to 26 hours, so this mean-motion estimate can differ from a published panchang.
Tithi
tithi = floor(elongation in degrees / 12) + 1, where elongation = moon age / synodic month x 360
A mean-motion approximation. Use an ephemeris-based panchang for ritual timing.
tithi = floor(elongation in degrees / 12) + 1, where elongation = moon age / synodic month x 360. A tithi is each twelve degrees of elongation between the Moon and the Sun, so the tithi number is the elongation divided by twelve, with the first fifteen forming the waxing paksha.
Because tithis depend on true rather than mean lunar motion, they can run from about 19 to 26 hours, so this mean-motion estimate can differ from a published panchang.
Enter date, hour of day in utc. The defaults shown are a realistic worked example — swap in your own figures to get a result you can use.