The second decan of Gemini is 10° to 20° of the sign, the sign in its fuller, more settled middle register. In the classical face system this stretch is sub-ruled by Mars, a second planet laid over Gemini's own ruler, Mercury. A decan never changes the sign, it tones it: here the Gemini nature carries a Mars accent, sharpening it toward appetite, courage, and the drive to begin and to defend.
- Sign
- Gemini, the messenger
- Decan
- Second face (10° to 20°)
- Face ruler
- Mars, drive
- Element
- Air
- Modality
- Mutable
The Mars face of Gemini
Gemini is the messenger, air by element and mutable by mode. Its Mars face adds drive and the nerve to begin, so a Gemini of the second decan tends to keep the Gemini temperament while leaning, more than the sign's other two faces do, toward drive: desire and assertion. Think of it as Gemini read in a Mars key.
If this decan is yours, where do you recognise the Gemini in you carried with a Mars accent, and where the drive to begin runs ahead of the aim?
The other decans of Gemini
Gemini also holds the first decan, the Jupiter face and the third decan, the Sun face. See the Gemini zodiac sign in full, read today's Gemini horoscope, or explore all thirty-six decans.
Frequently asked
What is the second decan of Gemini?
The second decan of Gemini is 10° to 20° of the sign, the sign in its fuller, more settled middle register. In the classical face system this stretch is sub-ruled by Mars, a second planet laid over Gemini's own ruler, Mercury. A decan never changes the sign, it tones it: here the Gemini nature carries a Mars accent, sharpening it toward appetite, courage, and the drive to begin and to defend.
Who rules the second decan of Gemini?
The second decan of Gemini (10° to 20°) is classically sub-ruled by Mars, laid over Gemini's own ruler, Mercury.
What are decans in astrology?
Each zodiac sign spans thirty degrees, divided into three decans of ten degrees. Each decan is sub-ruled by a classical planet in the Chaldean order, giving that stretch of the sign a second tone. They are read as a lens for reflection, never a prediction.