The lunar day, and the minute it ends. A tithi is the 12° the Moon gains on the Sun. It does not run midnight to midnight, and it is never the same length twice.
| Day | Runs |
|---|---|
| 10 AugMon | Dwadashi to 8:01 AM → Trayodashi to 4:54 AM → Chaturdashi to 5:49 AM |
| TodayTue | Chaturdashi to 1:53 AM → Amavasya to 5:49 AM |
| 12 AugWed | Amavasya to 11:06 PM → Pratipada to 5:50 AM |
| 13 AugThu | Pratipada to 8:42 PM → Dwitiya to 5:50 AM |
| 14 AugFri | Dwitiya to 6:47 PM → Tritiya to 5:51 AM |
| 15 AugSat | Tritiya to 5:29 PM → Chaturthi to 5:51 AM |
| 16 AugSun | Chaturthi to 4:53 PM → Panchami to 5:52 AM |
A tithi is the time the Moon takes to move 12° further ahead of the Sun. Thirty of them make one lunar month: fifteen in the waxing Shukla paksha, ending at Purnima, and fifteen in the waning Krishna paksha, ending at Amavasya. Because the Moon does not move at a constant speed, a tithi can run from about 20 to about 27 hours.
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