http://www.everyhit.com/dates/

Using the above tool, type in you're date of birth and it will tell you what was Number One the day you were born.

Just below it says "For Number 1 single over the subsequent years Click Here".

Click that, and from the list you are given tell us the worst song that has been Number One on your birthday, and the best song that has been number one on your birthday. Go.