this post was submitted on 21 Sep 2026
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I find that interesting, in my family unit of my 2 parents, 4 siblings and our 5 partners, we don't even have 2 birthdays in the same month - which just makes it sound even more counter-intuitive to me, not that I'm disbelieving it, just relating it to my personal experience. . Once we go to the next generation, with my children, nieces and nephews, that adds another 12 people and the closest we got was 3 days apart.
My dad and his two siblings had the same birthday. It is a weird bit of trivia and I never got to ask my grandparents what the heck was going on with that!
Clearly they had one day a year scheduled for sex
What made me understand this was realizing that it meant any two people. The first time I heard this I was thinking that if I was in a group of 70 or 80 people, there was almost a 100% chance of someone having the same birthday as me. But it's not comparing to an individual, it's comparing all of the pairs. I hope that makes sense