~9 months after my parents' anniversary here (was born late, but the timing works out). I figured that out in my late 20s, mostly because who the hell really wants to think about that stuff?

When I made the horrific realization, my younger brother just looked at me like the Rage Comic Cereal Guy and said "yeah, you didn't know that?". Well no, because there's just some things you don't want to think about. Unfortunately, his birthday is 9 months after mine almost to the day, so both our birthdays are kinda ruined by basic math.