Most people rely on Google or a mobile app. But consider these five compelling reasons to invest in a dedicated portable annual tithi calculator:
The software computes the longitudinal difference between the Sun and Moon at sunrise (for Saurav day anchoring) or at midnight (for some regional variants). It then iterates through every day of the year (or every 6 hours) to detect when a Tithi starts and ends. The output is a table or calendar view listing:
An is a specialized digital tool used primarily in Hindu culture to determine the precise date of death anniversaries (Shraddha) and other recurring rituals based on the lunar calendar. Unlike the standard Gregorian calendar, Hindu dates (Tithis) fluctuate each year because they are based on the longitudinal angle between the Sun and the Moon. Key Features of a Portable Tithi Calculator