Even for dates in history we make associations that are significant to us to understand the events that took place.
If you want to just remember things like dates purely listed you need to create that list in the first place. How else could you remember it. Mostly dates are gathered ad hoc with discussion of the events that they related to. So to create a photographic memory of it you need to create a picture for it. One of the reason mind maps are so useful. The colours drawings and symbols give the photographic part of the memory something to look at.
Alex
