[antithesis]

I find it curious that there's a spike on February 14, but not one on November 14. There's somewhat of an increase starting at November 14, but it's not clear if that's a consequence of Valentine's Day. It's as if planning a birth on the holiday motivates reproduction more than the holiday itself.

[shalmanese]

Pregnancies aren't exactly 9 months. They're closer to 40 weeks which is November 7th which does have a moderate hump compared to the surrounding week.