Tithi Calculator
The lunar Tithi (of 30) for any date, computed from real sidereal positions.
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About the Tithi Calculator
Computes the lunar Tithi (of 30) for any date, from real sidereal Sun/Moon positions.
- Enter the calendar date you want to check.
- Read the computed Tithi name, its number (1-30), and Paksha (waxing/waning half).
- Check the Paksha field to see whether the Moon is waxing (Shukla, toward Purnima) or waning (Krishna, toward Amavasya).
- Use the Tithi name reference table below to see where this Tithi falls among all 15 named days in its Paksha.
Purnima (the 15th Tithi of Shukla Paksha, full moon) and Amavasya (the 15th/30th Tithi of Krishna Paksha, new moon) are the two most widely recognized Tithi names.
| Tithi # | Shukla Paksha (waxing) | Krishna Paksha (waning) |
|---|---|---|
| 1 | Pratipada | Pratipada |
| 2 | Dwitiya | Dwitiya |
| 3 | Tritiya | Tritiya |
| 4 | Chaturthi | Chaturthi |
| 5 | Panchami | Panchami |
| 6 | Shashthi | Shashthi |
| 7 | Saptami | Saptami |
| 8 | Ashtami | Ashtami |
| 9 | Navami | Navami |
| 10 | Dashami | Dashami |
| 11 | Ekadashi | Ekadashi |
| 12 | Dwadashi | Dwadashi |
| 13 | Trayodashi | Trayodashi |
| 14 | Chaturdashi | Chaturdashi |
| 15 | Purnima (full moon) | Amavasya (new moon) |
Tithi doesn't depend on your location, only the date — computed here at local midday (UTC-referenced). A Tithi can begin or end at any time of day, so the value shown may already have changed by the exact moment you're checking for, especially near a Tithi boundary.
- • This tool underlies several of this site's festival-date calculators, since Hindu festivals are traditionally defined by a specific Tithi within a specific lunar month, not a fixed Gregorian date.
- astronomy-engine — VSOP87-based astronomical calculation library — accessed 2026-09-06
Provided for general guidance based on traditional Vedic astronomy/astrology methods (Lahiri ayanamsa, classical texts cited on this page) — not scientific fact or a definitive prediction. Interpretations vary by tradition, region, and astrologer; consult a qualified astrologer or priest (pandit) for important life decisions.