Chicagohenge: Equinox in an Aligned City.

Sometimes, in a way, Chicago is like a modern Stonehenge . The way is east to west, and the time is today. Today, and every equinox , the Sun will set exactly to the west, everywhere on Earth . Therefore, today in Chicago , the Sun will set directly down the long equatorially-aligned grid of streets and buildings, an event dubbed #chicagohenge . Featured here is a Chicago Henge picture taken during the last equinox in mid-September of 2017 looking along part of Upper Wacker Drive . Many cities , though, have streets or other features that are well-aligned to Earth's spin axis. Therefore, quite possibly, your favorite street may also run east - west. Tonight at sunset, with a quick glance, you can actually find out .