Wondering why birthdays and babies always seem to reach a fever pitch as summer turns to fall?
According to data collected by the New York Times, September 16th is the most popular birthday for babies born between 1973 and 1999. Actually, all 10 of the top 10 birthdays fall in September. And August isn't too far behind in the rankings.
→ See all the birth date data: How Common is Your Birthday?
Why? Your guess is as good as mine. A study published in the Obstetrics & Gynecology journal, summarized by Medical Daily, suggested that there could be some biological influences like "deterioration of sperm quality during summer, seasonal differences in anterior pituitary-ovarian function caused by changes in the daylight length, and variation in quality of the ovum or endometrial receptivity." I just happen to think people like getting busy when it's cold around the holidays.
No matter the reason, just know the evidence is there: You're not crazy for thinking that everyone you know is either having a baby or celebrating a birthday right now.
I'm sure you have a lot of questions. Like, "What do I get all these people for their birthdays?" and "What do I bring to the baby shower?" and "Wait, how popular is my birthday?" Good news: We have answers.