@Walter Hinteler,
The 23rd is called LIttle ChristmasEve. There are special programs on TV and in the radio. It is an evening to wrapped the gifts, do the last things or see relatives and friends you don´t see for Christmas.
The 24th in Sweden we start around noon with Julbord which is a smörgasbord with special Christmas food. Then there is a special TV program - before TV it was special radioprogram people love to see.
In the afternoon there is of course church services.
Around 18 hours time for dinner - lutfisk and after that the gifts.
We read the Christmas mail after the gifts. But that is just in my family.
Then there are Midnightmasses in the churches.
The 25th at 6 in the morning Julotta, another churchservice.
It is very nice to see all the windows with the trees and their candles walking in the dark night to church - or driving depeding on where you live.