Someone posted in another thread that the 2000 OnePass program ran through Feb. 28, 2001. I take this to mean that you have until March to fly the miles or segments to reach your desired elite level?

If so, what's the qualification period for 2001? I always just sort of assumed it was a hard calendar year (e.g. flights on Dec. 31 went toward 2000, on Jan. 1 toward 2001), but now I'm confused. Will flights taken in January count toward 2000 totals for 2001, toward 2001 totals for 2002, or possibly both? Any direction much appreciated.