Zodiac constellations can be traced even further back, to Bronze Age (First Babylonian dynasty) sources, including Gemini "The Twins", from MAŠ.TAB.BA.GAL.GAL "The Great Twins", and Cancer "The Crab", from AL.LUL "The Crayfish", among others. Around the end of the 5th century BC, Babylonian astronomers divided the ecliptic into twelve equal "signs", by analogy to twelve schematic months of thirty days each. Each sign contained thirty degrees of celestial longitude, thus creating the first known celestial coordinate system. Unlike modern astronomers, who place the beginning of the sign of Aries at the place of the Sun at the vernal equinox; Babylonian astronomers
Dragon (zodiac) replaced by the nāga. In the Gurung zodiac, the Dragon is replaced by the eagle. People born within these date ranges can be said to have been born in the "Year of the Dragon", while also bearing the following elemental sign: There are also typically marked spikes in the birth rates of countries that use the Chinese zodiac or places with substantial Overseas Chinese populations during the year of the Dragon, because such "Dragon babies" are considered to be lucky and have desirable characteristics that supposedly lead to better life outcomes. The relatively recent phenomenon of planning a child’s birth