I don't know and would love to know what it moved from.

Wikipedia knows all: WWDC

* 1998, San Jose, May 11 – May 15
* 1999, San Jose, May 10 – May 14
* 2000, San Jose, May 15 – May 19
* 2001, San Jose, May 21 – May 25
* 2002, San Jose, May 6 – May 10
* 2003, San Francisco, June 23 – June 27
* 2004, San Francisco, June 28 – July 2
* 2005, San Francisco, June 6 – June 10
* 2006, San Francisco, August 7 – August 11