According to Vedic astrology, this dosh occurs when all seven planets are hemmed between Rahu and Ketu. Depending on the planetary placements, it is divided into 12 types:
- Anant Kaal Sarp Dosh: Rahu is in the 1st house and Ketu is in the 7th house.
- Kulik Kaal Sarp Dosh: Rahu is in the 2nd house and Ketu is in the 8th house.
- Vasuki Kaal Sarp Dosh: Rahu is in the 3rd house and Ketu is in the 9th house.
- Shankhpal Kaal Sarp Dosh: Rahu is in the 4th house and Ketu is in the 10th house.
- Padam Kaal Sarp Dosh: Rahu is in the 5th house and Ketu is in the 11th house.
- Mahapadam Kaal Sarp Dosh: Rahu is in the 6th house and Ketu is in the 12th house.
- Takshak Kaal Sarp Dosh: Rahu is in the 7th house and Ketu is in the 1st house.
- Karkotak Kaal Sarp Dosh: Rahu is in the 8th house and Ketu is in the 2nd house.
- Shankhchood Kaal Sarp Dosh: Rahu is in the 9th house and Ketu is in the 3rd house.
- Ghatak Kaal Sarp Dosh: Rahu is in the 10th house and Ketu is in the 4th house.
- Vishdhar Kaal Sarp Dosh: Rahu is in the 11th house and Ketu is in the 5th house.
- Sheshnag Kaal Sarp Dosh: Rahu is in the 12th house and Ketu is in the 6th house.










