It is beneficial to do the pooja twice a year to get good results. Kaal Sarp Dosh Pooja Dates can take place at the time of the Uttarayanam period that falls from 15th Jan to 15th July. The Mahapadma Nag sarp dosh is formed when the planet Rahu is placed in the 6th house of the Kundli and Ketu is placed in the 12th house.