Hi Ashish! If I may probe a little deeper, what convinced you that it is Surya Siddhanta which has to be used instead of Drik Siddhanta? Isn’t ayanamsa correction sufficient to transform observed positions to true positions? Also, I understand that the estimates that Surya Siddhanta gives for events such as eclipses can be off by as much as few days. Are observed eclipses different from true eclipses too?