Christmas (literally, the Mass of Christ) is a holiday in the Christian calendar, usually observed on December 25, which celebrates the birth of Jesus.
According to the Christian gospels, Jesus was born to Mary in Bethlehem, where she and her husband Joseph had travelled to register in the Roman census. Christ's birth, or nativity, was said by his followers to fulfill the prophecies of Judaism that a messiah would come, from the house of David, to redeem the world from sin. Early Christians celebrated more the subsequent Epiphany, when the baby Jesus was visited by the Magi. Efforts to assign a date for his birth began some centuries later. The precise chronology of Jesus' birth and death as well as the historicity of Jesus are still debated.
In predominantly Christian countries, Christmas has become the most economically significant holiday of the year, and it is also celebrated as a secular holiday in many countries with small Christian populations. It is largely characterized by exchanging gifts within families, and by gifts brought by Santa Claus or other mythical figures. Local and regional Christmas traditions are still rich and varied, despite the widespread influence of American and British Christmas motifs through literature, television, and other media.