How special is your birthday, really?

How special is your birthday, really?

Your birthday, your special day. But how special is it?

According to Reader's Digest, about 20.8 million people worldwide share the same day of their birthday, if not the precise day and year. But that's actually an estimate. Seems no one has actually done the research.

However, we do know what are the 10 most common birthdays in the U.S. and all but one are in September, the most common birthday month.

The first top five are all in September. They are, in order starting with the number one most common birthday: 9, 19,12,17, and 19.

The sixth most common birthday is July 7.

The seventh through 10th most common birthdays are all in September: 20, 25, 16, and 18.