Board Thread:Questions and Answers/@comment-238662-20140527152104/@comment-238662-20140608085948

The destruction of Three Mile Island was in 79 so your maths doesn't matter, that's the onLy event in the film based on a real life event.

None of them age accurately. All of the mutants in the Future of Days of Future Past should be 17 years older than they were in the Last Stand and they aren't. Basically when you start looking at ages nothing works so you just have to ignore them for the films.