Christmas in 2012 is on Tuesday, the 25th of December.
Christmas Day is preceded by Christmas Eve on December 24, and in some countries is followed by Boxing Day on December 26.
The Armenian Apostolic Church observes Christmas on January 6, while certain old rite or old style Eastern Orthodox Churches celebrate Christmas on January 7, the date on the Gregorian calendar which corresponds to 25 December on the Julian Calendar.
Here are  the answers to Christmas questionary:

Santa Claus' reindeer is a team of flying reindeer traditionally held to pull the sleigh of Santa Claus and help him deliver Christmas gifts. The commonly cited names of the reindeer are Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donder (or Donner), and Blitzen. They are based on those used in the 1823 poem "A Visit from St. Nicholas", arguably the basis of reindeer's popularity as Christmas symbols

Dasher – It’s like when you name the tallest guy you know Little Bob. His name is “ironic,” he’s  slow   and sleeps all the time.
Dancer – Very flexible. The best dancer by far and she knows it, it definitely gets to her head.
Prancer – My joyful prince. Always a little light in the hooves.
Vixen – Besties with Dancer. They go out and paint the town red and green.
Comet – I was going to say something about him being really fast but I guess I won’t go there. Likes to clean.
Cupid – Another ironic name, he was very awkward  when he was a teenager.
DonDER  – Likes to wonder. And is always a little “in his head” if you know what I mean.
Blitzen – He got so drunk at the last Christmas work party ....
Rudolph – my main company  when I go out to cookie and milk bars.

and these are  the traditional x-mas decors: a X-mas tree (Tinsels, coloured balls, sugar candies, snow cover....), gingerbread house, Christmas pudding, the cradle with Jesus and Holy Mary, Carols, Holly Wreath on the door.....the Robin(a bird)....jingling bells... feast and night service...chimes .... Boxing Day ...toy soldiers on parade...

  The question arises: 

Who was the first to introduce these civic traditions to Britain?