
In Vedic timekeeping, a tithi (also spelled thithi) is a lunar day, or the time it takes for the longitudinal angle between the Moon and the Sun to increase by 12°. Tithis begin at varying times of day and vary in duration from approximately 19 to approximately 26 hours. ==Panchanga== A Hindu muhurta (moment) can be represented in five attributes...
Found on
http://en.wikipedia.org/wiki/Tithi

the lunar day, a thirtieth part of the lunar month, by which festival dates are calculated.
Found on
https://iskconeducationalservices.org/HoH/extras/02glossary.htm
No exact match found.