What is Face / Decan?
Faces (or decans) divide each zodiac sign into three equal 10-degree segments. Planetary rulership follows the Chaldean order: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon, repeating through all 36 faces starting from Aries. A planet in its own face has the minimum essential dignity—traditionally described as a guest receiving bare courtesy. While the weakest dignity, it still prevents a planet from being fully peregrine. Face imagery also appears in tarot's minor arcana associations.