September 22 at 10:49 a.m. is the Autumnal Equinox for 2012. It is the moment when the sun crosses the equator and we begin to see more darkness than daylight. For the next three months, our hours of daylight will continue to grow shorter. In December, on December 21, at 6:11 a.m., to be exact, it will be the Winter Solstice, the shortest day of the year in terms of hours of daylight. Photo courtesy of Andrew Bentz, LD Media.