Christmas is an annual festival commemorating the birth of Jesus Christ and celebrated on December 25 among billions of people around the world. This festival is preceded by the season of "Nativity Fasting" or "Advent" and it initiates the season of Christmastide that lasts for twelve days in the West and culminates on the twelfth night. In some traditions, Christmastide includes an octave. Christmas Day, which is a public holiday in many of the world's nations, is celebrated religiously by a majority of Christians, as well as culturally by many of non-Christians, and forms an integral part of the holiday season centered around it.
Christian holidays play a very significant part in this world’s daily agenda, even though many other people around the world are not Christians and vast areas in which Christianity has no followers. The Christian holidays are well known around the world, and they are also a critical factor in international business at certain times of the year. From its very beginning, Christianity set out to mark its historical events by holidays, creating these holidays to commemorate some meaningful event in the history of the religion birth.