I here under giving kalasarpa doshyogam details and it’s Intensity .
It totally comes under untold and all of sudden misfortune even efficient astrologer some time failure to find out.
Rahu and Ketu in between 1to 7 from lagna remains upto 27 yrs called as Ananta kala sarpa yogam.
Rahu and Ketu in between 2 to 8 remains aupto 33 yrs
Rahu and Ketu in between 3 to 9 remains upto 36 yrs
Rahu and Ketu in between 4 to 10 remain upto 42 yrs
Rahu and Ketu in between 5 to 11 in between upto 48
Rahu and Ketu in between 6 to 12 upto 58 yrs
Rahu and Ketu in between 7to 1 upto 27 yrs
Rahu and Ketu in between 8 to 2 upto 33 yrs
Rahu and Ketu in between 9 to 3 upto 36 yrs
Rahu and Ketu in between 10 to 4 upto 42 yrs
Rahu and Ketu in between 11 to 5 upto 48 yrs
Rahu and Ketu in between 12 to 6 upto 58 yrs
Above effects depends subject to original strength of Rahu and Ketu in astrological chart.