Twilight

Definition

Twilight is the interval before sunrise or after sunset when the Sun is below the horizon but still illuminates the sky. Astronomers distinguish civil, nautical, and astronomical twilight according to the Sun’s depth below the horizon. In astrology, twilight is most relevant when determining whether a chart is diurnal or nocturnal, especially for births or events occurring close to sunrise or sunset.

Astrological Meaning

Traditional astrology uses the Sun’s position relative to the horizon to establish sect. A chart with the Sun above the horizon is generally considered a day chart, while one with the Sun below it is a night chart. Twilight can make the sky appear light even when the Sun is technically below the horizon, so visual brightness alone does not determine sect. Accurate birth time, location, horizon calculations, and the Sun’s house position should be considered. Some astrologers also treat twilight symbolically as a transitional or threshold period, although this interpretation belongs more to modern or electional practice than to a universal classical rule.

Why It Matters

Correctly identifying twilight conditions can refine judgments about planetary sect, dignity, and the relative support traditionally assigned to planets such as the Sun, Jupiter, Saturn, the Moon, Venus, and Mars. It is particularly important when a chart falls near dawn or dusk, where a small timing error may move the Sun across the Ascendant or Descendant. Rather than treating twilight as inherently fortunate or difficult, astrologers assess the complete chart and verify the recorded time whenever possible.

Related Encyclopedia Entries

• Traditional Astrology
• Astrological Terminology
• Natal Chart