![]() ![]() ![]() They show a 12 month year with the occasional occurrence of a 13th month. The earliest archaeological evidence of Chinese calendars appears about 2,000 BCE. Their base 60 fraction system which we still use today (degrees / hours, minutes and seconds) was much easier to calculate with than the fractions used in Egypt or Greece,Īnd remained the main calculation tool for astronomers until after the 16th century, when decimal notation began to take over. The Assyrian winged man-headed bull had the strength of a bull, the swiftness of a bird and human intelligence.įrom about 700 BCE the Babylonians began to develop a mathematical theory of astronomy, but the equally divided 12-constellation zodiac appears later about 500 BCE to correspond to their year of 12 months of 30 days each. The constellation Taurus, the bull, a symbol of strength and fertility, figures prominently in the mythology of nearly all early civilizations, from Babylon and India to northern Europe. ![]()
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