Meet at the reconstructed Woodhenge. Arrive by 6:20 am. to hear an explanation of the discovery, form and function of this ancient post circle calendar. Each year the UNESCO World Heritage Site hosts a solstice celebration atop 100-foot-high Monk's Mound.
There are two equinoxes every year – in September and March – when the sun shines directly on the equator and the length of day and night is nearly equal. Seasons are opposite on either side of the equator, so the equinox in September is also known as the "autumnal (fall) equinox" in the northern hemisphere. However, in the southern hemisphere, it's known as the "spring (vernal) equinox". On the equinox, night and day are nearly exactly the same length – 12 hours – all over the world.
We can meet at Cahokia or if anyone is interested in carpooling, post a comment and we can start a carpool thread under the discussion tab.
Cahokia Mounds State Historic Site is located:
30 Ramey Street
Collinsville, IL 62234