Centennial calendar

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Centennial Calendar, 1924

The centenary calendar is a compilation of weather forecasts . It was written in the 17th century by Mauritius Knauer (* 1613 or 1614; † 1664), abbot of the Langheim monastery as Calendarium oeconomicum practicum perpetuum . The book was intended to enable him and his monks to predict the weather in Franconia and thus optimize monastic agriculture.

Knauer relied on classical astrological ideas. He started from the idea, which was controversial even among astrologers at the time, that the celestial bodies ("planets") moon, Saturn, Jupiter, Mars, sun, Venus and Mercury would be decisive for a year from the beginning of spring to the end of winter affect the weather. According to this theory, it was sufficient to make precise weather observations over any seven-year period in order, based on this, to be able to predict the weather for the future. Knauer, however, restricted the fact that additional, astrologically important factors such as comets, solar and lunar eclipses could influence the weather differently. The abbot laid the basis for his calendarium with detailed observations of the weather, probably in the years 1652 to 1658.

The Calendarium was first published in 1700 by the doctor Christoph von Hellwig , who worked in Tennstedt and later in Erfurt , who only omitted the Latin passages and claimed that the calendar was one hundred years old. The common view that this print has falsified the original text is incorrect. The Calendarium was first published in 1704 in Kulmbach under the name of the true author . Since 1720 the work has appeared more and more frequently under the title “Hundred Years Calendar”, named after the overview table showing the distribution of the years among the individual planets. The centenary calendar is still published by several publishers today. From a meteorological point of view, the forecasts are not tenable. Matches are counted as coincidences.

The centenary calendar is based on a tradition of peasant calendars ( folk calendars ) and agrarian lunar calendars , which can be traced back to the end of the Middle Ages.

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