Who'da thunk it?
I just found out that, according to this interview with JK Rowling, Hermione Granger's birthday is today, September 19. Hopefully, she can keep from mixing wizardry and wenchery, since as all kightp's f-list knows, September 19 is also International Talk Like A Pirate Day - and talking like a pirate while mixing Potions probably doesn't work too well.
On the other hand, "Arrr-mione!" has a bit of a nice ring to it, don't you think?