User blog comment:Oppaichan/Discuss changes and corrections/@comment-7948498-20140415050827/@comment-24034641-20140415152335

I'm the one who wrote Haruna's, and I got it from the Official Guidebook, I can upload the images I have if you'd like as proof. As I've noticed in the manga a few character have had different birthdays later on than what was written originally, going by the guidebook would be easier.

EDIT: Momo and Nana's are on the 8th of August btw.