Check how rare your birthday is using 85.7 million U.S. births. Open your birthday card, explore your ranking and the calendar, and share your result.
I built birthdaytraffic.com to answer one question: How rare is your birthday, really?! You pick a date and it shows your rank compared to everyone else. You can also explore other birthdays (and make your own conclusions about the events that conspired nine months earlier...)
Over 33,000 people tried it in its first week and I've been deep in the birthday universe since then. Feel free to ask any questions! :)
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