Christmas eve is December 24 , the day before Christmas day. People in some countries get the day off to prepare for Christmas day including decorating a christmas tree and doing the cooking for the big Christmas family dinner. It's also the time that children in many countries have been waiting to hang their stockings(long socks), hoping for a present from Santa on Christmas morning. Christmas Day is the day that Christians celebrate the birth of Jesus Christ, which is celebrated annually on the 25 of December