Say "Autumnal Equinox" aloud. Notice the way it rolls off the tongue? "Autumnal Equinox" is a phrase I love to say. In the Northern Hemisphere, the autumnal equinox comes at 9:49 CDT today, September 22. It marks the beginning of fall and a time when day and night are equal (from the Latin words aequus "equal" and nox "night"). … Continue reading Autumnal Equinox 2012