Every year in December 25th in the world the majority of Christians commemorate the birth of Jesus day. Beginning of the church there is no Christmas, about 100 years after Jesus ascended to heaven is. It is said: the first Christmas in the year 138, by the bishop of Rome Shengkelimen initiative. But the church history carries the first Christmas in the year 336 AD. Because the next remember not in the Bible when Jesus was born, so different all over the Christmas period. Until the year AD 440, just by the church in Rome in December 25th for christmas. In 1607, church leaders around the world gathered in Bethlehem, to be further identified, since most of the world's Christians are in December 25th for christmas. In fact, one day does not matter, important is to should know that it is to commemorate the birth of Jesus.