How Common is Your Birthday?
February 8, 2013 4:00 AM 
Ever wonder how many other people are sharing your birthday? Now you can figure it out. Kind of.
A statistician put together a chart of all 365 days of the year based on the total births on each of those days between 1973 and 1999. Here are some highlights.
The least-popular date for birthdays was February 29th, obviously since it only occurs once every four years on a leap year, when there are actually 366 days in a year.
The second least popular day is December 25th. Apparently that birthday is already taken.
The most popular date for births is September 16th. That’s just about nine months after the holiday season. And actually, all ten of the most common birth dates are in September.
September 11th is the 24th most common, but that’s now dropping.
July and August have the second and third most births.
Generally, major holidays have a lot fewer births around them- people really don’t induce on those days. July 4th has the fewest births of any summer day, and July 5th is second. Thanksgiving and New Year’s Day are also sparse.
The only exception is my birthday, Valentine’s Day. It has the most births of any day in the first five months of the year.
The 13th of every month also has a dip in births. It seems to be the least popular day overall.
Want a more in depth look? Click here.
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