Autumnal Equinox On Sunday 21 Sep 13

The Summer of 2013 is officially over as of Sunday afternoon.  The Autumnal Equinox arrives at approximately 3:44pm Central Daylight Time on Sunday. At that exact moment, the Earth will be lighted from pole to pole. The days start getting shorter from there on out as well. From then until the Spring Equinox on March 20th, the farther north you go, the shorter the days.