Tamil Astrology Birth Chart
Tamil Jothidam (தமிழ் ஜோதிடம்) is the ancient Tamil system of astrology, rooted in the Vedic tradition and practiced for over two thousand years across Tamil Nadu and the Tamil diaspora. Unlike Western astrology which uses the tropical zodiac, Tamil astrology uses the sidereal zodiac — aligned to the actual positions of the stars in the sky.
Your Rasi (ராசி) is your Moon sign — the zodiac constellation the Moon occupied at your birth. In Tamil astrology, the Moon is considered more important than the Sun because it governs the mind, emotions, and inner self.
Your Nakshatram (நட்சத்திரம்) is your birth star — one of 27 lunar mansions that divide the sky. Each Nakshatra spans 13°20' of the ecliptic and carries its own deity, ruling planet, and personality. Your Nakshatra and its Padam (quarter) are used for naming ceremonies, matching horoscopes for marriage, and determining auspicious timings.
The Moon moves roughly half a degree every hour. Since each Nakshatra is only 13°20' wide, a difference of a few hours can place the Moon in a completely different birth star. An accurate birth time ensures the correct Rasi and Nakshatram are calculated. The timezone converts your local birth time to Universal Time for the astronomical calculation.