[trussell]

Do you know what it is called when there is a ring around the moon?

ie. when there is a ring around the sun it is called a sun dog.

[petuniasevan]

Actually it's the bright spots that are sun dogs. See below.

Below are moon dogs (see them?), also called paraselene

May I direct interested parties to a great resource with thorough, easy-to-understand explanations, charts, images, and diagrams:

Atmospheric Optics