Tithis: Why Hindu Dates Change Every Year
तिथि: हिन्दू तिथियाँ हर साल क्यों बदलती हैं
Quick Answer
A tithi is a lunar day in the Hindu calendar, defined by the 12-degree angular distance between the sun and moon. There are 30 tithis in a lunar month (15 waxing, 15 waning), and they determine when festivals, fasts, and rituals are observed.