theere is no answer for this but if you are not a believer youll miss the rapture anyway  ,but there are some scripture that might help.the world says that no man knows the day or the hour  not even the angles  in have heaven only the father knows  so the first thing to do is get saved.  and watch the times because the word says therell be earthquakes & wars&famines in divers places when you sey theses things come to pass then you know the end is near .matt24-3-13, is the best answer!