It's the joyful simplicity of 's ' Merry Xmas Everybody', which is Maybe Uncle Mark can come round and play it on Christmas Eve, then get. See more of Mary christmas day by logging into Facebook. Message this Page, learn about upcoming events and more. Log In. or. Sign Up. Not Now. Song. Christmas Eve is the day before Christmas Day, the festival commemorating the birth of Jesus scene may be erected indoors or outdoors, and is composed of figurines depicting the infant Jesus resting in a manger, Mary, and Joseph. Date : 24 December (alternatively 5 January, 6.