I found a cute video that shows you a trick with math and a calculator on how to get your birthday.
Try following along with the steps and see if it works for you. It worked for me!
Easy Math Magic Tricks – Birthday Date Calculations
http://www.WorstJokeEver.Com Here comes a math trick to play upon calcualting your birthday date. Suprise your friends and family with this magic calculation…
So did it work?
Have a great day!