Christmas, also known as Christmas, is translated as "Christ Mass", which originated from the Lunar New Year celebration in ancient Rome and has nothing to do with Christianity.
After the popularity of Christianity in the Roman Empire, the Holy See drifted this folk festival into the Christian system to celebrate the birth of Jesus. But it is not Jesus'birthday on Christmas Day, because the Bible does not record when Jesus was born, nor does it mention such a festival, which is the result of Christianity's absorption of ancient Roman mythology.
Most Catholic Churches celebrate Christmas on Christmas Eve on December 24, or midnight Mass in the early morning of December 25, while some Christian Churches celebrate Christmas on December 25. Another major branch of Christianity, the Orthodox Church, celebrates Christmas on January 7 each year.
Christmas is also a public holiday in the western world and many other areas, such as Hong Kong and Macao, Malaysia and Singapore in Asia.