Astrool Tithi
A lunar day: the time it takes the Moon to gain another 12° on the Sun. Thirty make a lunar month.
Definition
A tithi begins each time the angle between Moon and Sun grows by another 12°. Because the Moon's speed varies, a tithi lasts between about 19 and 26 hours and can begin at any time of day. The tithi prevailing at sunrise names the day. Festivals such as Diwali and Ekadashi fasts are set by tithi.
The thirty tithis
Pratipada, Dwitiya, Tritiya, Chaturthi, Panchami, Shashthi, Saptami, Ashtami, Navami, Dashami, Ekadashi, Dwadashi, Trayodashi, Chaturdashi, then Purnima (full Moon) in the waxing half, and the same fourteen ending in Amavasya (new Moon) in the waning half. See paksha.
Tithi groups
| Group | Meaning | Good for | Tithis |
|---|---|---|---|
| Nanda | Joy | Beginnings, celebrations, creative work | 1, 6, 11 |
| Bhadra | Wellbeing | Steady long-term work, home and health | 2, 7, 12 |
| Jaya | Victory | Competition, tough negotiations | 3, 8, 13 |
| Rikta | Empty | Clearing up and finishing; weak for new starts | 4, 9, 14 |
| Purna | Full | Completing and seeing results | 5, 10, 15 |
Today's tithi and its end time are in the Panchang.
See it in your own chart
Astrool calculates your full birth chart, not just your sun sign, and writes your daily, weekly and monthly readings against it.
Common questions
Why can a tithi be skipped or repeated?
Because tithis vary in length, sometimes none begins at sunrise (kshaya) or two sunrises share one (vriddhi).
What tithi was I born on?
It is the Sun–Moon angle at birth; Astrool's lunar phase uses the same angle.