Decans or Decanates

Each sign is split into 3 parts:
- 0-10 degrees is ruled by the sign
- 10-20 degrees is sub-ruled by next sign of the same element
- 20-30 degrees is sub-ruled by the 3rd sign of the same element
Suggested reading:
Astrology Decans by Sanju Paison
The Christos Sun Meditations: Following the Eightfold Path Through the Decans of the Zodiac by Randall Scott
Angels of Time: Meditations In Conjunction With The 36 Decans Of The Zodiac by Eugenia Macer-Story
Video:
Learn how to say Decanates correctly with EmmaSaying’s “how do you pronounce” free tutorials.
Decans can tell you something special about your sign from http://www.ProfessorAstrology.com