Decan, Decanate: Based on the subdivision of a sign into three parts of 10° each. Each decan of a sign expresses subtle differences that distinguish it from the other two decans as described by its planetary sub-ruler, which operates in conjunction with the natural planetary ruler of the sign. The first decan of a sign (0° to 10°) is sub-ruled by the natural ruler of the sign; the second decan (10° to 20°) is sub-ruled by the ruler of the next sign in the zodiac that belongs to the same triplicity; the third decan (20° to 30°) is sub-ruled by the ruler of the remaining sign in that triplicity.

 

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Decan, Decanate: Based on the subdivision of a sign into three parts of 10° each. Each decan of a sign expresses subtle differences that distinguish it from the other two decans as described by its planetary . . . View Full Definition

Decanate: The partitioning of each Sign into three equal parts of 10 degrees each. Each part is known as a decanate. Every Sign is composed of 30 degrees.