title: Diurnal
text: # Diurnal
  
  Diurnal ("daily") may refer to:
  
  ## General
  
  * Diurnal cycle, any pattern that recurs daily
     * Diurnality, the behavior of animals and plants that are active in the daytime
  * Diurnal phase shift, a phase shift of electromagnetic signals
  * Diurnal temperature variation, a cycle of daily temperature change
  
  ## Astronomy
  
  * Diurnal arc, the time (expressed in right ascension) that it takes a planet etc. to move from its rising to its setting point
  * Diurnal motion, the apparent motion of stars around the Earth
  
  ## Astrology
  
  * Diurnal chart, a chart for a given date, based on the natal chart
  * Diurnal planet, a planet in a sect for which the Sun is above the horizon
  * Diurnal sign, a sign in the zodiac
  