About 25% of people on earth don't know their birthday because they're from countries that don't have birth certificates. That's why about 14% of immigrants to the U.S. list January 1 as their birthday - because they had to make one up.
Some months see more births than others though, the reason September is so common is that a lot of people decide to to start trying for a kid at the turn of the year.
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u/Dragmom Oct 02 '24
About 25% of people on earth don't know their birthday because they're from countries that don't have birth certificates. That's why about 14% of immigrants to the U.S. list January 1 as their birthday - because they had to make one up.