re: So, because it's Groundhog Day;

No, I don't think the actual time matters. I just never realized it until I read it somewhere a few years ago. I never actually thought about how long it would take to do all of those things. I just always assumed he relived the day for a few months because the movie only shows like 40 of the days.

And I agree. 10 years is pretty close to the bare minimum. It was probably much longer.