The 36 Faces

Decans

Each zodiac sign is divided into three 10-degree segments called decans, each with its own planetary ruler. Compare three traditional systems.

Chaldean (Traditional) Triplicity (Ptolemaic) Egyptian (36 Faces)

The oldest decan system. Planetary rulers follow the Chaldean order: Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon — cycling through all 36 decans starting from Mars (Aries 1st decan).

All Signs Aries Taurus Gemini Cancer Leo Virgo Libra Scorpio Sagittarius Capricorn Aquarius Pisces

♉ Taurus

Decan 1 0° – 9°

Ruler

Mercury

Decan 2 10° – 19°

Ruler

Moon

Decan 3 20° – 29°

Ruler

Saturn

References

Chaldean: Traditional planetary order (Firmicus Maternus, Ptolemy). Triplicity: Ptolemaic system. Egyptian: 36 Faces tradition (Austin Coppock).