How Common Is Your Birthday?Casey Chan5/16/12 12:00pm276EditPromoteDismissUndismissHideGo to permalinkYour birthday! The day you feel like the most special person on the planet! The day you get to do what you want. But don't forget, other people share your birthday too. In fact, a lot of people do. What are the most common birthdays? Check out this snazzy visualization to find out.