It may be a few days into the new year now, but this calendar is really fun. I just had to post it. The 12-sided calendar is also known as a regular dodecahedron. It's pretty tricky to assemble - especially at the end when you feel you need another set of hands. All you have to do is to remember to do NOVEMBER last. It is the only month that doesn't have any fold-over tabs. It is helpful to have a chopstick handy to poke inside to assist in securing anything that's not sticking or properly aligned. This prevents bending the paper. Cut out whole design before scoring and folding. Cut solid lines, score dotted lines.