Introduction In the Vedic system of time measurement (Panchānga), Tithi (lunar day) holds a central place. It represents the angular distance between the Sun (Sūrya) and the Moon (Chandra), serving as one of the five fundamental limbs of the Panchānga (the others being Vāra [weekday], Nakṣatra [constellation], Yoga, and Karaṇa). A Tithi is not merely a unit of time but a cosmic indicator of energy, […]