This Dosh occurs when an individual has harmed a snake in their past-life time, or the deceased ancestors are displeased by their actions. And as per Puranas, if one wishes to eliminate this Dosh and all the difficulties, one should perform Kaal Sarp Dosh Puja with proper Vedic rituals. According to Astrology, Kaal Sarp Dosh happens when all the planets (Grah) are coming in between the Rahu and Ketu; then the person shows a sign of Kaal Sarp Yog in his/her natal chart. Kaal Sarp Dosh means disarrangements of Grah ( Planets) created by Rahu and Ketu.