with my daughter in 2005, the date my ob gave me was the same day my friend died a few years earlyer, i said oh no, thats the date my friend died... he changed it to the week earlier which ended up being my birthday. this made baby elective c section date @ 37 weeks.
my daughter decided to arive early anyway so we dont have same b day !

I dought an ob would book a csection that early though now, my ob only used tuesdays, hopefully yours works more frequently, I would ask, dont feel bad about " oh that days no sutible"

All the best