The Washington Post announces the exact moment in Say goodbye to summer as daylight dwindles, the fall equinox is on Wednesday.
Summer warmth has visited many parts of the country this September, but fall is finally in the air as we near the autumnal equinox. This year’s equinox occurs Sept. 23 at 4:21 a.m. Eastern time. At that time, the sun can be seen directly overhead along Earth’s equator, marking the beginning of astronomical fall in the Northern Hemisphere.Google has a special doodle for today, which is featured in Autumnal Equinox 2015 Google Doodle.
The fall equinox is one of only two days each year when all points on Earth outside the polar regions see the sun rise and set at due east and due west, along the horizon. And since neither hemisphere is tilted toward the sun, all latitudes see almost exactly 12 hours of daylight and darkness (though not quite).
Once again, Happy Autumnal Equinox!