Merry Christmas! Have you ever wondered who else was born on Christmas Day? Apparently many people. It is likely that 1/365.25 of the total population have the Christmas Day birthday, or any other given day (except February 29th, which is 1/1461, because it comes in leap years, which is once in every 4 years). The current population of the world is about 7 billion, so on average, about 20 million people have the same birthday (except February 29th, which is 5 million). That is to say, about 20 million people, who are alive, have the birthday on Christmas Day.
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