Just curious, really. Our 37-38 week mark falls half in September and half in August. We're scheduled for induction at 37+5 on September 2, but I'm now re-thinking dates. I was older in my year with an October birthday and was often bored in class. I was also embarrassingly tall for my age, which meant a lot of teasing. Then, of course, if the girls were born in August, there's the bonus that they'd go to nursery school a whole year earlier (presumably), which would save a LOT on childcare.
If you were in our odd position of (theoretically) getting to choose your twins' birthday, would you go for August or September? I'm just really ready to have them out, so would love to go a teensy bit earlier if it didn't matter about dates, but don't want to ruin their future either just for a few extra days without feet cracking my ribs!