Harry Potter Book 7 on July 7, 2007

"It just so happens that July 7, 2007 is a Saturday. It just so happens that every Potter book since Goblet of Fire has been released on a Saturday (presumably to allow kids and their parents to attend those midnight release parties without undue hardship). It just so happens that July 7 falls right in the traditional June-July release window during which the other books were released. (Finally, while less relevant but still interesting, 12:00 a.m. on Saturday will be 7 p.m." -hpana-