Frey said:
One in particular was Luke's comment in ESB about how Dagobah "felt familiar". Personally I interpret this to mean that through some combination of circumstances, Luke spent a short amount of time on Dagobah at three or four years of age, right around the time the brain starts forming coherent memories.
Huh, it seems obvious but I hadn't thought of that before. I can't figure out how and why young Luke would have been on Degobah but it'll be fun trying to imagine it.
Another similar date issue with the prequels is when did the Jedi begin? Ben says they've been guarding the Old Republic "For over a thousand generations". Apparently a "Generation" is considered to be about 25-years, so it was at least 25,000 years. Palpatine says it's no more than 1000 years in AOTC. Always amazes that Lucas didn't fact check his own script x-D