Is that moon waxing or wanning? Have you ever heard those expressions and wondered what they were speaking about? I do, so I did some research, and I found out that a wanning moon looks like a C, and a waxing moon looks like a D.
I hope that helps. It is sort of like coming and going. I also note that the moon on the side when it is full looks jagged as if it had a chunk blown off at one time. Awesome, yet useless information.