I've just found a new way to change day to night! Ok, what you have to do is this:
1. Look up at the sky.
2. Move your hand over part of the sky.
3. If the part of sky you waved your hand over turned black, you've done it right.
4. Turn all but a circle of sky black.*
5. Now draw a cresent moon under the circle of sky.
6. Fill in the circle of sky.
*If you were to turn all of the sky black, you would probably get a FA.
I will update this if I find anymore uses for it.