Due dates weirdness

I've noticed this recently that all my due dates are in coincidence with my siblings birthdays.

My son who is now 2 years old was born November 20 and my sisters bday is November 19

My angel babys due date was January 6 and my brothers bday is January 4.

Now I'm pregnant again and my due date is July 16th and my sister (who passed away 20 years ago) bday was july 17th.

Is that crazy or what? 🤔😮