My mom and dad got married on his birthday, Dec. 15th. A year later I was due on Dec. 15th but held out until Dec 26 at 1:56 a.m. after 21 hours of labor.
My mom was born on May 29th. My brother was born on my mom's 21st birthday. I married a man whose mother was born on May 27th. His grandfather was born on May 18th, my aunt's birthday. His father was born on December 7th.
So ... in May we had Mothers' Day and both mothers' birthdays, my brother's birthday, and DH's grandfather's birthday.
In December we had my grandfather's birthday, both dads' birthdays, my parents' wedding anniversary, Christmas, and my birthday.