Look up diurnal in Wiktionary, the free dictionary.

Diurnal ("daily") may refer to:

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