PETIN M.I.

                        PETIN - METON calendar

 Contents - http://Petin1Mikhail.narod.ru/index.htm  

                          Introduction  

  Common information

  Natural cycles, calendar cycles, formats of calendar dates

  Industrial cycles

  Properties of calendars

  Calendar's reform  

           Variant 1

           Variant 2

           Variant 3

           Variant 4

  Resume 1

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 Contents - http://Petin1Mikhail.narod.ru/index.htm