Leo 3rd decan
20° - 30°·Subruled by Aries
Third decan of Leo (20°–30°). Subruled by Aries - blends Leo's fire nature with Aries's qualities.
Traditional reading
Aries subrules the final decan of Leo under the modern triplicity arrangement, returning Mars to the fire triplicity's cycle. Degrees 20 to 30 are portrayed as the most combative stretch of the sign: solar pride armed with martial directness, ambition that competes openly rather than presiding graciously, and a temper quicker than Leo's usual slow burn. Descriptive treatments mention decisive leadership in crisis, physical courage and appetite for contest, and creative work marked by boldness of attack rather than polish. The fixed core remains in these accounts, so positions once taken are defended with both the lion's stubbornness and the ram's heat.
The Chaldean sequence likewise gives this face to Mars, so once again the two traditions converge on a single planet. Medieval face imagery for late Leo runs to swords, quarrels and hard-won victory in the compilations descending from the Picatrix, and traditional astrologers reading Mars here emphasized boldness shading into rashness. As with every decan, the classical authors ranked the face below triplicity, exaltation and domicile when weighing dignity, treating it as a final thin layer of planetary affiliation inherited from Egyptian star lore.
Leo archetype
Leo is the sole domicile of the Sun. Fixed fire, traditionally tied to sovereignty and visible display.
Aries subruler archetype
Aries is the domicile of Mars and exaltation of the Sun in Hellenistic tradition. Associated with initiation, the spring equinox in the tropical zodiac, and the cardinal beginning of the year.
Other Leo decans
Reference, not advice
This is cultural and astronomical reference, not personal prediction or advice.
The triplicity decan system assigns each decan a subruler from the sign's element triplicity, in zodiacal order. This is the modern Western convention; classical Hellenistic decan assignments (Chaldean order) differ. See methodology.
Last reviewed .