Christmas about Xmas question

Costume and gift measures also posted besides Christmas trivia
Christmas is already established as an annual event as in common in Japan, and events are also taking place grandly.
Early in November the Christmas tree is decorated early in the commercial facilities, Christmas sale etc. are done.
Christmas song flows in the shop, and Christmas cakes are sold at the cake shop. In the city, bean light bulbs (LED lighting considering energy conservation in recent years) are decorated on street trees (illumination).
In some families with gardens, there are cases where electric garden trees etc. are decorated, and in the case of commercial facilities, etc., events etc. may be held at Christmas Eve on 24th December.
Also, many Christmas songs such as jingle bells are popular among many people.

Originally Christmas (English: Christmas) is a festival celebrating the birth (birth) of Jesus Christ (day to commemorate the birth). Celebrated on 25th December, those who use the Julian calendar of the Orthodox celebrate Christmas on the day corresponding to January 7th of the Gregorian calendar. However, it is not Eastern Christmas that is regarded as the most important festival in Christianity, it is an Easter festival.
Because the Jewish calendar preceding Christianity, the calendar of the Roman Empire, and the church calendar which took over them, the sunset is the boundary of the day, so from the evening of 24th December called the Christmas Eve until the morning, on the Church calendar It is counted on the same day as Christmas. There is also a notation such as a birthday festival at the church.

There are people who enjoy family and lover and friends with each other, I think whether there are people who live alone and work.
Which one is "Christmas" originally? I do not think I can hear it.
I think that it is difficult to tell even in kindergartens, elementary and junior high schools.

If you are having some Christmas, it is worth seeing at once.
This app is about easier knowledge about Christmas.

It is in ○, × form, but there is no concept of correct answer, incorrect answer
As you said, if you know "○", if you do not know "×"
Press the button ♪

I thought that I should spend Christmas on 12 / 24,25 looking at this.
Well then, Merry Christmas ♪