day and night

Hmmm. That's the first word I have to say about this. I love the effect: it makes you think.
That is, think about what you were going for when you took this picture. I don't really understand this picture, but it's wonderfully executed, and a damn original idea! I've never seen anything like this in all my time on dA (all of about 4 months).
I love how you captured the moon, with the halo around it in the clouds. However, you could have framed it so that the moon was in a better position, rather than right in the middle like a mug shot.
The only other complaint is that you could have used a little less color. If you had processed it to be B+W, with a bit more contrast, maybe a little more impact would have been gained. Right now, it's a tad dull, and a lot of unbroken midtone.
A very interesting photo, and one that I would say would be a good candidate for stock.