HARVEST MOON - The Harvets Moon is said to come before or after the autumnal equinox. Often the Harvest Moon seems to be bigger or brighter or more colorful than other moons. These effects have to do with the seasonal tilt of the earth. The warm color of the moon shortly after it rises is caused by the light from the moon passing through a greater amount of atmospheric particles than when the moon is overhead. The apparent larger size is because the brain perceives a low-hanging moon to be larger than one that's high in the sky. This is known as a moon illusion and can be seen with any full moon. (Wikipedia)