Is due date accurate?

I have been wanting to ask you about this. If you are a mom, I like to know did you have your baby before or after due date. As for me, my Sean came early exactly for a month. Supposed to be due on March but he came on February. The doctor even asking me “Did I tell you that your baby going to come early?”. No he didn’t and he didn’t expect baby is coming early too.

So far I only got a friend that has her baby due on exact date. Another friend just didn’t sure because even the doctor told them about the due date, her baby came very early and doctor told her that she has counted wrongly about was her menstrual period last came.

My Sean born on exact of 36 weeks.