Hermione's birthday (Was: Is Hermione Older or Younger than Harry?

[justcarol67]

No: HPFGUIDX 92683

 Potioncat:
 For all we know, she finished grade 
 school early (Or is that allowed in England?) or, she was advanced 
 enough that she simply left school early to go into Hogwarts.
 
 
 Geoff:
 It would be extremely unusual for a child to move up a year early. I 
 hvae known it happen when there was a mix-up in the age but, from the 
 information given, if Hermione's birthday was in September, then 
 under the /normal/ situation, she must have been 11 in the preceding 
 year and hence the best part of a year older that Harry.

Carol responds:
Specifically, her birthday is September 19, according to the October
19 AOL chat:

Q: When is Hermione's birthday?
JKR: Hermione's birthday is September 19th. 

http://www.the-leaky-cauldron.org/quickquotes/articles/2000/1000-livechat-aol.html

Not that her response establishes the year or Hermione's age, but at
least we do know the exact day.

Carol, who assumes that Hermione is older than the boys because that's
the way the system appears to work