Here's a fun little bit of info that I sort of knew but had forgotten (and certainly never memorized the actual days of). Consumerist.com reports that the little poky plastic tabs that come on bread bags to hold them shut aren't just randomly colored by fun-loving factory workers, they actually have a coded meaning telling you which day of the week the bread was baked.
I've often noticed when I do Sunday shopping that most of the loaves have white plastic ties, so I guess that's pretty good. What color are your bread bag ties? Go check right now!