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Birthday Rarity Chart: The Complete Data-Backed Guide to Birth Date Frequencies
"A birthday rarity chart ranks every calendar day from 1 to 366 based on total live births recorded over extensive population studies. Based on data from the Centers for Disease Control and Prevention (CDC) National Center for Health Statistics (NCHS), February 29 is the absolute rarest birthday, occurring only once every four years. Among non-leap days, major holidays like Christmas Day (December 25) and New Year's Day (January 1) consistently record the fewest births, while mid-to-late September days rank as the most common. How Birthday Rarity Data Is Measured and Calculated Demographers, statisticians, and public health researchers establi..."
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