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  • ???????? ??????? ????? ???? ? ????????? ????? ???, "???????? ???? ???? ??? ? ????????? ?? ????"? [1] ???? ??? ? ???????? (???????? ??? ????????)? ???? ???????? ??? ????? ???? (Newcomb's Tables of the Sun) ??????? ???, ?? ???????? ???????? ???? ? ( Dublin Julian day ) ???? ?????? ????? ???? [2]

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  1. "Leap Seconds" . Time Service Department, United States Naval Observatory . Archived from the original on 1996-11-26 . https://web.archive.org/web/19961126204059/http://tycho.usno.navy.mil/leapsec.html ? ???? ??? ????: 2006-12-31 .  
  2. ASTROCLK Astronomical Clock and Celestial Tracking Program (page 110)
  3. "XL2000: Early Dates on Office Spreadsheet Component Differ from Excel" . Microsoft . http://support.microsoft.com/kb/205719 ? ???? ??? ????: 2007-12-08 . "In the Microsoft Office Spreadsheet Component, the value 0 evaluates to the date December 30, 1899 and the value 1 evaluates to December 31, 1899. ... In Excel, the value 0 evaluates to January 0, 1900 and the value 1 evaluates to January 1, 1900."