Re: Timeline of Nolan's trilogy.
Really, I think trying to assign the date takes away from the experience. I usually like to think that Begins takes place in 2004, then TDK in 2005, then TDKR in 2013, that way the eight year gap lines up from when Batman Begins was being made.
However, yeah, trying to assign a date takes the timelessness and fantasy away from it. Even when I'm watching Superman 1978, I'm still able to lock myself in the fantasy of the movie to the point where I don't really notice that it's from a different decade all-together.