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

♈ Aries

Decan 1 0° – 9°

Ruler

Mars

Decan 2 10° – 19°

Ruler

Sun

Decan 3 20° – 29°

Ruler

Venus

♉ Taurus

Decan 1 0° – 9°

Ruler

Mercury

Decan 2 10° – 19°

Ruler

Moon

Decan 3 20° – 29°

Ruler

Saturn

♊ Gemini

Decan 1 0° – 9°

Ruler

Jupiter

Decan 2 10° – 19°

Ruler

Mars

Decan 3 20° – 29°

Ruler

Sun

♋ Cancer

Decan 1 0° – 9°

Ruler

Venus

Decan 2 10° – 19°

Ruler

Mercury

Decan 3 20° – 29°

Ruler

Moon

♌ Leo

Decan 1 0° – 9°

Ruler

Saturn

Decan 2 10° – 19°

Ruler

Jupiter

Decan 3 20° – 29°

Ruler

Mars

♍ Virgo

Decan 1 0° – 9°

Ruler

Sun

Decan 2 10° – 19°

Ruler

Venus

Decan 3 20° – 29°

Ruler

Mercury

♎ Libra

Decan 1 0° – 9°

Ruler

Moon

Decan 2 10° – 19°

Ruler

Saturn

Decan 3 20° – 29°

Ruler

Jupiter

♏ Scorpio

Decan 1 0° – 9°

Ruler

Mars

Decan 2 10° – 19°

Ruler

Sun

Decan 3 20° – 29°

Ruler

Venus

♐ Sagittarius

Decan 1 0° – 9°

Ruler

Mercury

Decan 2 10° – 19°

Ruler

Moon

Decan 3 20° – 29°

Ruler

Saturn

♑ Capricorn

Decan 1 0° – 9°

Ruler

Jupiter

Decan 2 10° – 19°

Ruler

Mars

Decan 3 20° – 29°

Ruler

Sun

♒ Aquarius

Decan 1 0° – 9°

Ruler

Venus

Decan 2 10° – 19°

Ruler

Mercury

Decan 3 20° – 29°

Ruler

Moon

♓ Pisces

Decan 1 0° – 9°

Ruler

Saturn

Decan 2 10° – 19°

Ruler

Jupiter

Decan 3 20° – 29°

Ruler

Mars

References

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