<div id="doc-original-text" >Christmas or Christmas Day is an annual commemoration of the birth of Jesus Christ,[5][6] celebrated generally on December 25[2][3][4] as a religious and cultural holiday by billions of people around the world. A feast central to the Christian liturgical year, it closes the Advent season and initiates the twelve days of Christmastide.[7] Christmas is a civil holiday in many of the world's nations,[8][9][10] is celebrated by an increasing number of non-Christians,[1][11][12] and is an integral part of the Christmas and holiday season.<p>The precise day of Jesus