fall equinox

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Noun1.fall equinox - September 22fall equinox - September 22        
Sep, Sept, September - the month following August and preceding October
autumn, fall - the season when the leaves fall from the trees; "in the fall of 1973"
References in periodicals archive ?
High, smooth sand dunes that make spectacular sand boarding experiences, the Amun Oracle where Alexander the Great was declared a son of Amun and where a spring and fall equinox alignments and double window alignments are witnessed yearly, healing salt lakes, year-long warm sulfuric springs, plenty of sea shell fossils, as well as dates and olives, and more dates and olives.
The majority of our seasonal guests will have returned home by mid-month, and Friday, September 22 marks the fall equinox.
22, the Fall Equinox, to formally announce the rebranding to Comet Creative.
The point halfway between the fall equinox and the winter solstice has deep meaning to people whose lives are attuned to the passing of the seasons, because it's then that the Northern Hemisphere enters its darkest period.
Opening on the fall equinox and closing on the winter solstice, Emilie Halpern's third solo show at Pepin Moore seemed more in sync with cosmological rhythms than with the mundane cycles of the art world.
The Egyptians, Phoenicians and Persians began their new year with the fall equinox, and the Greeks celebrated it on the winter solstice.
Photo 1 shows the outside of Equinox House taken on September 20, close to the fall equinox.
He discovered that smallmouths start their fall movements one week after the fall equinox.