…a 27,759-day cycle. In 334 B.C., the Greek Callippus (of Cyzicus) invented this cycle, which has 28 leap months in 76 years, making 76 years = 940 calendar months, and the total number of days is 27,759. Therefore, one year is 365.25 days, and one calendar month is 29.53085 days. … From [Calendar]…In 432 BC, the 19-year cycle discovered by Meton (the 6th century BC Chinese Zhangfa, from the 9th century BC in Babylonia) was introduced. Using this as a base, Kallippos (330 BC, 76-year cycle = Callippos cycle) and Hipparchus (125 BC, 304-year cycle) added improvements, creating a nearly perfect cycle. However, the Metonic cycle was not widely adopted, and each city-state arbitrarily inserted intercalations for political reasons. … *Some of the terminology explanations that mention "Callippos" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…2万7759日の周期。前334年にギリシアのカリポス(キュジコスの)の考案した周期で,76年に28回の閏(うるう)月を置き76年=940暦月とし,その総日数を2万7759日とする。したがって1年は365.25日,1暦月は29.53085日となる。… 【暦】より…前432年にメトンMetōnが発見した19年周期=メトン周期(中国前6世紀の〈章法〉,バビロニアでは前9世紀より)が導入された。これを土台にカリポスKallippos(前330年,76年周期=カリポス周期)とヒッパルコス(前125年,304年周期)が改良を加え,ほぼ完全な周期が作られた。ただしメトン周期は実際にはあまり普及せず,各都市国家で政治的な理由での恣意(しい)的な置閏が行われていた。… ※「カリポス」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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