the winter is long, with dark nights and we celebrate the winter festivle/Christmas by name as that it what it is mostly called.
We put a tree in the sitting room and have lights around the house and a tinsle wreath on the door, all things cheerful and bright to brighten up the long winter nights.
We have present swapping with family and friends that wish to join us on the 25th and a big dinner followed by games, then for a week or so we eat cold meat and meet other friends and have a few drinks, play a lot of games and chat.
Then on the 6th night we celebrate a new year, this used to be 25th March but it got moved in 1752 and so now is part and parcel of the celebrations.