Hinduism had traditional lifestyle practice involving faith and belief in entwined sciences of astrology and astronomy.
Timing of marriage, muhurtham of Griha pravesam, starting of a new important activity are fixed after consultation by competent astrologers.
What scriptural basis exists about validity and accuracy of life / good events/ catastrophe predictions based on birth time and time of planetary conjunctions in general? What are some most glaring demonstrated cases of occurrences based on pre-dicted and pre-announced calculations that came out true in the past?
EDIT: A motivation of the post is about what one can do today (versus what one cannot change.. birth star or subsequent planetary motions) to alleviate the malefic effects of certain stars/planets by resorting to Homam, Yagnam and other Pacifications. But alas it has to be undertaken in a diverted chat room, If at all ! .. I was searching for some fora that could stand up to guard some time tested traditions.