FYI:
Diurnal
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Look up diurnal in Wiktionary, the free dictionary.
Diurnal (“daily”) may refer to:
Diurnal cycle, any pattern that recurs daily
Diurnality, the behavior of animals and plants that are active in the daytime
Diurnal motion, the apparent motion of stars around the Earth
Diurnal phase shift, a phase shift of electromagnetic signals
Diurnal temperature variation, a cycle of daily temperature change
In 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
Diurnal arc, time expressed as right ascension