I'm not sure where the confusion is, except that you're trying to apply a common-sense notion of "time" and "events" as things that happen independently of the observer. But in fact Special Relativity makes some very bold statements about how integral the observer is to the process of observing both time and events.
I can understand the desire to apply common-sense definitions to things, but please understand that "event" and "observer" and "time" have very rigorous definitions in science, and that these definitions are constructed into a system of equations(a model) which has great predictive power but which does not always line up with common-sense notions of these words.
Basically, our ability to accurately predict the future is not confined to events in our own frame of reference, so the difference between what is known to have happened and what is predicted to happen need not be very large.