Diurnal ("
daily") may refer to:
General
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Diurnal cycle
A diurnal cycle (or diel cycle) is any pattern that recurs every 24 hours as a result of one full Earth's rotation, rotation of the planet Earth around its axis. Earth's rotation causes surface diurnal temperature variation, temperature fluctuati ...
, any pattern that recurs daily
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Diurnality
Diurnality is a form of plant and ethology, animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is "diurnal". The timing of activity by ...
, the behavior of animals and plants that are active in the daytime
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Diurnal phase shift, a phase shift of electromagnetic signals
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Diurnal temperature variation
In meteorology, diurnal temperature variation is the variation between a high air temperature and a low temperature that occurs during the same day.
Temperature lag
Temperature lag, also known as thermal inertia, is an important factor in diur ...
, a cycle of daily temperature change
Astronomy
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Diurnal arc, the time (expressed in right ascension) that it takes a planet etc. to move from its rising to its setting point
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Diurnal motion, the apparent motion of stars around the Earth
Astrology
* Diurnal chart, a chart for a given date, based on the
natal chart
A horoscope (or other commonly used names for the horoscope in English include natal chart, astrological chart, astro-chart, celestial map, sky-map, star-chart, cosmogram, vitasphere, radical chart, radix, chart wheel or simply chart) is an ast ...
* Diurnal planet, a planet in a
sect
A sect is a subgroup of a religion, religious, politics, political, or philosophy, philosophical belief system, typically emerging as an offshoot of a larger organization. Originally, the term referred specifically to religious groups that had s ...
for which the Sun is above the horizon
See also
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Salisbury Diurnal
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