many moons

Many moons is part of a phrase which indicates that what they are talking about happened a long time ago. Many moons, usually as many moons ago is usually referring to the number of moons which they have seen, such as many days. However some people believe the term many moons to be referring to the number of full moons there have been since the situation has occurred because full moons are rarer and therefore it must mean a very long time ago.