On September 23 each year, the earth experiences the?

  • A summer solstice
  • B autumnal equinox
  • C winter solstice
  • D vernal equinox

The correct answer is B. autumnal equinox

An equinox is an astronomical event in which the plane of Earth's equator passes through the center of the Sun, which occurs twice each year, around 20 March and 23 September.

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