Christmas is on1February 25th every year, which is expressed in English in western countries. On the festival scenery, many unofficial countries whose mother tongue is English, such as China, Japan and South Korea, also express this festival in English, and now it has developed into a worldwide festival.

Christmas, also known as Christmas Day, is translated as "Christian Mass", a traditional western festival, which falls on February 25th every year/kloc-0. Mass is a liturgy of the church. Christmas is a religious festival, because it is celebrated as the birthday of Jesus, hence the name "Christmas". Most Catholic churches will hold midnight mass on Christmas Eve on 24th, that is, in the early morning of1February 25th, while some Christian churches will hold good news, and then celebrate Christmas on1February 25th.