This Glashütte is one of those fairly popular 'moon phase' watches, and you can particularly tell in this case because the second hand has a moon on it (clever). Though, I've always wondered: why moon phase? I mean, for that you can just look up. How about keeping track of some other phases that could be a little more difficult to ascertain.

For instance:
-stock market fluctuations
-the "male period"
-the denial phase
-the phases of human existence
-when i should clean out my refrigerator

// via Dreamwatches