Look up diurnal in Wiktionary, the free dictionary.

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

See also

• Diurnality
• Salisbury Diurnal

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