Christianity as a whole has many different holidays and "days of obligation", from The Sabbath, which occurs every seven days, to holidays like Christmas and Easter which are observed only once a year.
Christmas is probably the most note able of all these. Not only is it observed by the Christians but it has become so ingrained in modern American society it is expected by all to receive a "Christmas break" in late December. Employers often give a Christmas bonus around the time to all of their employees, regardless of religious beliefs. The year's most noted holiday is celebrated on December 25th, both in homes and churches worldwide. The meaning for Christmas is to celebrate the birth of their Messiah, Jesus Christ. During the fourth century the Bishop of Rome set December 25th as Christ's birth date, though the exact birth date is note known. Some authorities claim that the choice of December 25th was made because it coincided with Chanukah, Mithraic's feast of the sun god, and the people of northern Europe's winter solstice feast. …