when did christmas celebration begin

Christmas is a holiday that has been celebrated for centuries. The origins of Christmas can be traced back to the pagan festival of Yule, which was celebrated in Northern Europe during the winter solstice. Over time, the festival was Christianized and became known as the Feast of the Nativity, which commemorates the birth of Jesus Christ. In the modern era, Christmas has become a secular holiday that is celebrated by people of all religions and backgrounds around the world.