In Vedic astrology (Jyotish), the Moon sign — called Chandra Rashi — holds significantly more weight than the Sun sign. The Moon represents Manas, the mind: your thoughts, feelings, habitual reactions, and the inner landscape you carry through life. Where the Sun sign describes your core identity, the Moon sign describes how you actually experience the world moment to moment.
Your Moon sign is determined by which of the twelve sidereal zodiac signs the Moon occupied at the exact moment of your birth. Because the Moon moves roughly 13° per day, it changes sign approximately every 2.5 days — making birth time important for accuracy near sign boundaries.
Vedic practitioners use the Moon sign as the primary reference point for daily horoscopes (gochara transits), compatibility analysis (kundali matching), and Vimshottari Dasha timing. Many classical texts treat the Moon sign as the foundation of the entire chart interpretation.