The moon is an essential part of numerous folklore myths and legends. No wonder it is depicted on many state flags! However, the full moon has been always thought to be an omen.

It is amazing that Ancient Egyptians have never considered the full moon as a scary phenomenon. In Ancient Egypt, the moon was associated only with the kindest and noblest deities such as Horus or Bastet. It is an interesting fact that for some period of time the moon had been known as Yah (and that was just a name for the satellite) and then it suddenly turned out to be the eye of Horus! In any case, there is no doubt that the nation was fond of this celestial body.

More Info: en.wikipedia.org