Nadi Astrology is a form of Hindu astrology.

Nadi Astrology is a form of Hindu 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 Hindu in ancient time.

Nadi in Sanskrit means the pulse, the subtle channels in the body, a division of time (24 minutes). In Tamil, the language of Tamil Nadu, Nadi means in search of. To be in search of the past, the reason of existence, to search the roots and essence of the past. In Yoga and Ayurveda, Nadi are the subtle channels that give message to the different parts of the body plus the Ida, Pingala and Sushumna nadi. Grantha is a great book of knowledge.

Nadi Granthas or the great books of subtle knowledge, are recordings of the Sapta Rishi. Sapta means seven and Rishi means Sages. Brahma conceived the Seven Great Sages out of his mind to help in his creation of the world. They were Bhrigu, Angira, Atri, Vishvamitra, Kashyapa, Vashishta, and Agastya. They knew the key to creation and the destiny of each and every individual born and yet to be born.