When somebody born between Rahu and ketu at that time all the planets comes together. Then Kaal Sarp Yog apears in the person.
People who born in kaal sarp yog are well mannered, Educated, self respected and wellwishers, examples like "Pandit Jawaharlal Nehru" and "Abram Linkan". If a couple is not having any children and if that time any sadhu/sant gives blessing for children, at that yime Newly Born baby will also be in Kaal Sarp Yog. These Peoples's kundli/chart is very different from ordinary people. They have Rahu in 4th place.
Kaal Sarp Yog is a Famous Subject. There are 288 Kaal Sarp Yog. There are some little bit of peoples having sucess in their life. Some Historical books gives information of how to Solve problems of "Kaal Sarp Yog".