One thing you can never ever predict nor even estimate is the longevity of a person using any branch of science. Even a person condemned to death is not sure of when he will be hanged. Astrology can only evaluate a person’s life between birth and death and it can give the success factor of life as well as individual characteristics of life. Read my blog navagrahastro.blogspot.in to get a realistic capability of astrological evaluation.
You do not have to worry about when you will die. It can happen any moment. Only one thing is certain that you will die one day.