Check this out!

Find Out the #1 Song the Day You Were Born here...
http://www.joshhosler.biz/numberOneInHistory/selectMonth.htm

Hmm...So I wonder if it counts if I've never ever heard the song before?? Who on earth is Freddie and the Dreamers and their song "I'm Telling You Now"!? However if I add on a few more years, my song would be "Aquarius" by the Fifth Dimension which I'm familiar with at least!