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Time for a Universal Calendar is
Theory and History of Time Measurement
Understanding Calendar Defects
17 other sections not shown
30 days accepted according accounting Achelis adopted basis blank blank-day blank-day device calendar reform called cause century Christian civil Committee comparable Conference confusion consider contain continued corresponding countries December defects earth Easter Economic and Social Enquiry equal equinox Equitable Calendar established exactly expressed fact fall favor February federal five fixed and perpetual four give Gregorian Calendar groups half holidays important interest International January Julian July June later League of Nations leap leap-week length lunar March mean measurement method Monday month observed occur October official ordinary organizations perfected period permanent perpetual calendar practically present principles problem proposed quarter religious remain representatives result seasons September seven-day simplified Social Council solar stabilization standard statistical Sunday thirteen thirteen-month calendar twelve twelve-month United Nations universal various week World Calendar York