User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-4531192-20130821185530/@comment-5593616-20130829122307

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Detail is extremely important. Anyway in his and everybody else's eyes, Percy's birthday is still August 18. Technicalities xD

''And he is still 16. Even a day makes a difference, so obviously a month does as well.''