Analysis of information sources in references of the Wikipedia article "Zodiac" in English language version.
The Longitude of a Celestial Object is reckoned on the Ecliptic, in signs and degrees, eastward from the first point of Aries.
[T]he zodiac was introduced between −408 and −397 and probably within a very few years of −400.
[T]he zodiac was introduced between −408 and −397 and probably within a very few years of −400.
[T]he zodiac was introduced between −408 and −397 and probably within a very few years of −400.