Nādi Astrology is a form of astrology practiced in Tamil Nadu and adjacent regions in India. It is based on the belief that the present lives of many humans were foreseen by Hindu sages in ancient times.

Vaitheeswaran Koil is a Hindu temple dedicated to the Shiva, located in the Indian state of Tamil Nadu. Shiva is worshipped as Vaidyanathar or Vaitheeswaran meaning the "God of healing" and it is believed that prayers to Vaitheeswaran can cure diseases. Vaitheeswaran is a Tamil derivative from vaidya (Doctor) and Ishvara (God/Master). The presiding deity is Sri vaidyanathan, facing towards West whereas East side is the common one. He is the God of Healing. When pronouncing in Tamil, it sounds like "vaideeswaran". It is one of the nine Navagraha temples and is associated with the planet Mars (Angaraka).