How does the modern astronomical location of the spring equinox differ from its location when the zodiac system was formalized two millennia ago?
Answer
It has drifted backward through Aries and now occurs within Pisces or Aquarius.
Due to precession, the vernal equinox, which once coincided with the constellation Aries, has drifted backward over two millennia and now occurs when the Sun is physically located within Pisces or approaching Aquarius.
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