No, that is not tumbling to the ground at a local gym.
The Fall Equinox, or Autumnal Equinox, as any robed reader would tell you, is when (other than the polar regions, duh!) the sun rises due east and sets due west along the horizon.
The Spring Equinox is the only other day this occurs. From this point forward, daylight is shorter, nights longer, but REGJB judges lunch "hours" remain the same.
"Rumpole, what does this mean?" you may say.
Consider this- on September 1, 2016 there was 12 hours and 38 minutes of sunlight.
On October 1, 2016 there will be 11 hours and 54 minutes of daylight. We are losing one minute and thirty seconds of daylight, per day from now until the winter solstice.
Peace out- and don't curse the darkness- light a candle.