In Finland the most important day of Christmas celebration is always the Christmas eve, the 24th. That's when we have the traditional dinner, go to the Christmas sauna and that's when Santa comes to visit. Like, Claus walks in with a sack and gives presents, which from my understanding differs a lot from countries like UK and USA. In cartoons and other media I've always seen the night of 24th-25th being the important night when santa visits while everyone sleeps and the presents are under the tree in the morning of 25th. How are the traditions around Europe?