noun
EXAMPLES FROM CORPUS
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Dominic knows that in the 1960s the equinox had progressed to Aquarius.
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Only during the time of the spring and autumn equinoxes do our aquariums have a tropical day.
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The equinox had surely passed already, and perhaps the solstice was approaching.
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There arc four seasons, or rather four solar points of the year, the solstices and equinoxes.