Imagine, you are a child living in the 1920s and it is the first day of Advent. This year, your Mother has a special surprise for you. She told you she would give it to you in the morning and you can't wait to see what it is. You hope it will be an Advent Calendar, like the ones you saw in the city recently. Sure enough, when you go down for breakfast with your parents, Mother hands you an Advent Calendar. You search for the first window and carefully pull it open, making sure not to crease the paper.