Just how popular is your birthday?

If your birthday falls in the months of July or September, you share a birthday months with millions of Americans.  Those are the most popular months to be born in, according to a very ambitious data researcher with NPR.

If you were born on a particular day in mid-September, you have the number-one most popular birthday known to man.  Congrats!  What's the least popular?

No big shocker that not many people are born on February 29th.  It's the least popular.  The opportunity to have that birthday only comes around once every four years, and it's rare, according to researcher Matt Stiles, who has crunched all the numbers.

The most popular birthday for Americans between the ages of 14 and 40 is September 16th.  Stiles says that means conception happened on or around December 24th.  My birthday is September 17th.  Nice work Mom and Dad!

If your birthday is on the 13th of any month, that's the least popular day of the month for a birthday.  We wonder if c-sections are skewing the numbers a little.  Many couples won't pick the number 13 for a c-section because it's supposed to be unlucky.  Christmas Day birthdays and January 1 birthdays are rare too in the big picture - both days that elective c-sections would not be occurring because they are holidays.

To see the chart and find out where your birthday lands, click HERE.

And if your birthday is June 10th, Happy Birthday!