Today is October 31st. That is to say, Halloween. Google is dressed up accordingly, and has a little surprise for you if you click several times on their banner. And clicking on their banner gives you the top results for the search "Halloween 2009".

Date of Halloween

Yeah, I was wondering, too. Also what about Christmas and New Year? And for 2012? Why will they not tell us when Halloween falls in 2012? Don't we know when Halloween falls in 2012? Is it a government conspiracy?