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DeterminingDayofWeek

上传者: 2019-07-14 02:05:07上传 ZIP文件 1.49KB 热度 16次
IntheGregoriancalendar,whichiswidelyusednow,theyearAD1isdirectlyprecededbytheyear1BC;ayear0doesnotexistinthissystem.Incontrast,astronomicalreckoningindeedusesayear0.Forthepurposeofdistinction,astronomicalreckoningdropsthesymbolsADandBCandusesaplusorminussignbeforetheyeari
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