“Tithi Timer Hindu Calendar: Track Auspicious Ritual Times” is a highly accurate, digital open-source Hindu lunisolar calendar application designed to track the precise start and end times of Tithis (lunar days), Pakshas (lunar fortnights), and months based on Vedic timekeeping principles.
By calculating the exact astronomical positions of the Sun and Moon, it helps users identify precise spiritual windows—known as Shubh Muhuratas—for performing daily rituals, festivals, fasting, and ceremonies. Core Concept: Why a “Timer” is Needed
Unlike a standard 24-hour Gregorian day, a Tithi is a dynamic lunar day defined as the time it takes for the Moon to move exactly 12 degrees ahead of the Sun. Because the Moon’s orbital speed varies, a Tithi does not align with a solar day:
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