September stands out as the most popular month for birthdays in the U.S. Data from the National Center for Health Statistics and the Social Security Administration reveal that September 9 holds the title for the most common birthday.

Nine of the top ten birth dates for births between 1994 and 2014 fell between September 9 and September 20, according to Parents .

The trend suggests a significant number of conceptions occur during the holiday season, approximately nine months earlier.

Mental Floss reported that several factors contribute to the September birthday boom. One key element is the timing of the holidays, particularly in December. The festive atmosphere, combined with time off work and increased social gatherings, often leads to higher conception rates during this period. Add

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