Happy Birthday, Harry (and Jo)

Well, we already know JKR used the astrological elements to create the Hogwarts Houses. According to The Secret Language of Birthdays by Gary Goldschneider and Joost Elffers, Snape's birthday (January 9) is also The Day of Ambition. As if that wasn't enough of a coincidence, JKR's own birthday (as well as Harry's) is The Day of the Human Portrait. Like Snape's birthday, many of the astrological details mentioned in the birthday book really seem to match Harry (and Jo, albeit a bit less obviously).

( Leo - July 31 - The Day of the Human Portrait )