For every event in the past there is energy still floating around of that time. This is what intuitive individuals pick up when they "read" photos, places, and other objects, the bits of energy from the thoughts and emotions of the people who lived through that time. This energy revolves around the saying "if a tree were to fall in the woods, and no one was there to hear it, would it make a sound." If a living, thinking, feeling creature experienced an event, they will leave energy that can be read/interpreted by an intuitive human being in some way. That's why past events "picked up" by intuitives only capture one perspective. If no one was present, then it would be difficult if not impossible. If you're sensitive enough, you can pick up on this energy BUT you cannot change what has occurred.
You can provoke your mind to make time feel like its moving slower or faster, but for the rest of the world, time is going at the same rate. Our sense of time works off the earth's rotation, and you're not going to be changing that with magick. Time is relative, there is no such things. Some believe time is cyclical, and repeats itself over and over again throughout history. Your watches and clocks are human made, not nature made. Time is only a theory of man, nothing more. There is only past, present and future. We can learn from the past, and plan for the future, but the present is the only place we live.