Derlin is one of twelve astrological signs in the Aprisic Astrology system. It corresponds to the earthly sign of Sagittarius, though only by date and not by characteristics.
The symbol of Derlin is the fly. For centuries the fly has been the symbol of the quiet observer, seeing everything around them without being noticed. Derlinians are also said to be all over the place, unpredictable. Their flight pattern is unorthodox, and what seems like chaos to others is comfortable to them. They also have a unique sense of vision, which is can be the source of frustration as others often don’t understand them.