It’s funny that for all the attention given to Harry’s birthday, only once are we ever told that it’s another character’s birthday. By the time Half-Blood Prince was released, we knew some of the other characters’ birthdays, thanks to the calendar on J.K. Rowling’s (still fairly new) website, but we had never seen a celebration of Ron’s birthday, or Hermione’s, Hagrid’s, or anybody else’s. They simply aren’t all that important to the story, I suppose; after all, it is Harry’s name on the cover.
On the other hand, maybe the other characters simply heard what happened to Ron when his birthday was mentioned, and petitioned Rowling not to have their own included, too….
Harry Potter and the Half-Blood Prince, chapter eighteen: ‘Birthday Surprises’
