Nadi Astrology is a form of Dharma astrology practiced in Tamil Nadu, Kerala and adjacent regions in India. It is based on the belief that the past, present and the future lives of all humans were foreseen by Dharma sages in ancient time.

Astrology is based on twelve Signs, twelve Houses, & twelve Planets. All other elements used in Astrology are either limbs or sub divisions of these Signs, Houses & Planets. There are countless living & nonliving beings in this Universe. To signify all these Astrologically we use these Signs, Houses & Planets. Everybody, in Astrology field know the significators of general terms used such as vehicle, property, money, travel etc. but it is impossible to remember significators for all in this Universe.