I used to have dreams in which I'd see events of the future... usually just mundane shit like sitting round talking to friends. My normal dreams are mostly imagery where as these dreams are quite vivid. I've done a bit of research and it seems to be somewhat common.
I'm a massive skeptic and a Scientist, so I'm sure there is some explanation for things like this. i.e. Humans are evolving a better understanding of time, not that it's just my imagination. But it does sound similar to what you experienced.