My son was born on Friday the 13th 45 years ago today and of course since then his Birthday comes round to fall on a Friday every few years. We always think of it as good luck as we live at number 13 as well.
I have a Friday the 13th baby too (who will turn 38 this November)! When he was born they did a little foot print stamp type birth certificate in the delivery room and the nurse wrote "Lucky day" on the top. Just like you we thought so too! How sweet is this shot?!
My late brother once wrote on a card he had to display on his desk during an exam. He was in desk 13. He wrote "unlucky for some but not for meeeeeeee!"