What is the date of the championship league playoff final 2008?

According to the Wembley Event Calendar for 2008 at (http://www.wembleystadium.com/NR/rdonlyres/37343D5F-62C6-44DD-8606-00E9D1998602/0/Eventcalendar2008.pdf)

It appears that the Championship play off final is on Saturday 24th May 2008.