Days of Futures Past?

[Xofenroht]

Hey guys,
I'm developing an idea for something I'd like to do concerning "Days of Futures Past". Would anyone be able to help me out with whatever they might be able to tell me about that timeline and where it fits in (continuity-wise) with the Marvel Universe?

Thanks,

Xof

 

[Ockham]

http://en.wikipedia.org/wiki/Days_of_Future_Past