Irish By The Number

I was just looking at the calendar , St. Patrick's day is always on 3/17.
It occured to me that these numbers, 3 & 17 have a special meaning to me. My daughter was born on the 3rd and my son was born on the 17th. Their grandfather's birthday was 3/17 and his wife , their grandmother died on my son's birthday.
Not sure that it means anything, but I thought it was interesting.