Weather calendar | ancient meteorology | Britannica (original) (raw)

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• use with Greek calendar
  • 
    In calendar: The year
    A device (called a parapēgma) with movable pegs indicated the approximate correspondence between, for example, the rising of the star Arcturus and the civil date.
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compiled by

• Conon
  • In Conon of Samos
    …and Sicily, Conon compiled the parapegma, a calendar of meteorological forecasts and of the risings and settings of the stars. He settled in Alexandria, where he served as court astronomer to Ptolemy III Euergetes I (reigned 246–221). When Berenice II, the consort of Ptolemy III, dedicated her hair as an…
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• Hipparchus
  • In Hipparchus: Lover of truth
    Such weather calendars (parapēgmata), which synchronized the onset of winds, rains, and storms with the astronomical seasons and the risings and settings of the constellations, were produced by many Greek astronomers from at least as early as the 4th century bce.
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