Ac-ro-ny-chal Phase
/əˈkrɒn.ɪ.kəl feɪz/
The condition in which a celestial body rises at sunset, is visible all night, and sets at sunrise. In astrology, this corresponds to the body being in opposition to the Sun and therefore at peak visibility and symbolic strength.
During the acronychal phase, a planet, star, or the Moon is directly opposite the Sun, making it shine through the entire night. The Full Moon is the clearest example, as it always appears in this phase. Ancient astrologers and sky-watchers paid close attention to acronychal risings and settings, using them as markers for seasonal cycles, agricultural timing, and ritual observances. For modern astrology students, the acronychal phase highlights a time when a planet’s energy is fully illuminated and despite being retrograde in motion (celestial bodies are retrograde in motion at the opposition to the Sun with the exception of the Moon which is always direct) operate in an outward and visible way, enhancing its significance in interpretation.