Autumnal Equinox. Second Harvest. Mea’n Fo’mhair. Mabon. Whatever you call it, this day marks the changing of the seasons and it celebrates equality and planetary harmony on the earth. The Northern and Southern hemisphere rarely get the same thing at the same time. There are only two days that they see eye to eye when it comes to light and darkness, and Mabon is one of those days. During the Autumnal Equinox both hemispheres get exactly the same amount of light—and the same amount of darkness—due to the tilt of the Earth and the position of the sun. The seasons may still be reversed, but the lengths of the day and the night are exactly the same and that balance only happens one other time throughout the year. The harmony may not have anything to do with mankind at all, but man has celebrated it for centuries.