User blog comment:PercyJacksonfan12/Christmas/@comment-4528975-20111210061549

I know now that Percy celebrates Christmas. Look at the comment made by A Wikia Contributor below. In the Demigod Files, Percy wondered if he can get home in time so that he can open his gifts. Maybe he does celebrate Christmas but he doesn't consider it as a religious holiday because in the Lightning Thief he said that he doesn't believe in God.