The Big Four Doshas: Mangal, Kaal Sarp, Nadi Dosh and Grahan A free talk to astrologer will help you consider the better factors considering these dosha and many more. You can choose your astrologer from AstroManch, one app that will help you with all aspects. https://astromanch.com/blog/the-big-four-doshas-mangal-kaal-sarp-nadi-dosh-and-grahan