This is from UK.
I can't sense too much Christianity in it.
I guess, in the mind of many children, Christmast means Sant Claus instead of Jesus.
That is first Santa,
God Poseidon, celebrated at aroundbegining of December with modern calendar, and ended with the days of Alkyon middle January (christian 6 january)
that is the first Christian Santa, saint Nicolas
the Bishop of ΜΥΡΑ Λυκιας (today Kale Attaleia) where Poseidon had a big temple before christianity.
in red and white,
celebrated at 4-5-6 December
and saint Nicolas at West Europe, celbrated at Christmas
at East after emperror Julian and the total defeat of polytheism, they replace him with Saint Basileios of Caesaria (Kayseri)
and calebrate him at 1rst January
at Germanic nations from Nikolaos (Ni)-Kolaus) turn to Klauss -Clauss.
and that is the modern Saint, which is no saint at all for me,
but a saint of merchants, and multinational corporations
and turkey (the bird) is brought from America,
Before each family slain the pig as at Roman Saturnalia, 20-23 December.
and eat meat 4 times the week until February,
they pasteurised it with its own fat and salt till 40 days before Easter at Christians,
till end of January- middle of February and gave the remain to the men who leave to go for work at antique.
would a real saint, order to drink a refreshment?
it comes from the end of year of Greek naval merchants, and Roman calendars (merchant bills),
along with Kalanta,
December rough month for sea, they redraw the ships, they went home, and bring gifts to family, from the places they went,
they restore the ships, and decorate them, till the new sacred waters, when Poseidon wrath ends,
around middle of January, when Alkyon lays her eggs.
the old decoration for the season was a ship
at nearby sea cities,
at inland, continental they celebrate the pastoralist return to village,
and Phaethon rebirth with fires and dressed as goat or bears,
a trully IE custom,
the christmas tree as we know it is a Germanic custom, most say from WW1,
but there was also a custom with Ιξος in Greeks and Thracians and Celts
the old true meaning of santa, was the return of the male to home for a month,
either sailor, either sheppard, even soldier,
and spend the money he gain for the family,
for farmers and hand-works, like carpenters smiths etc, was January,
merchants used to take merchandise, and pay at January February,
that is why Christmas Carrols at Greece are paid with money, or foreign products delicasies etc.
farmers used to gather outside merchants home, and sing, till he gave them the money, or other things he trade.
today only kids sing the callendas
PS
when I was kid, housekeepers treated handmade κουραμπιε, kurabiye, which comes from the deep minor Asia or Persia
or melomakarono which comes from ancient Greek death rituals
and if they were from Pontus they treat ωτια (ears)
that was the spirit,