Do they celebrate on a different day, St Stephen's or something? 😃 Or they celebrate Noel instead??

You have the 2nd correct

Its because there is No L ( Noel ) in Christmas

Dayum you guys put me to shame.  I don't know 🤔 any of these answers so far.  

Vic, I'm still wondering about the 12 days of Xmas presents and how they got beyond 78 🍓

All Answers will be revealed on Xmas day