For "twenty years", read "once upon a time". I feel that a bit of vagueness in dates is appropriate for a story like this. I have no contemporary written documentation, so it's based on my fallible memory, and I don't want to give a false impression of accuracy.
Yep, that's more or less what I did ("back in the mid to late 90s") to continue reading and not second guess it to much. Great story otherwise, thanks for sharing it!