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physical phenomena > event > celestial event > periodic celestial event > equinox > autumnal equinox |
autumnal equinox | ||||
subject | fact |
autumnal equinox | has definition See equinox | |
is an instance of equinox | ||
equinox | has period 1 year | |
event | has duration | |
has synonym world point | ||
has time of occurrence |