Decans are triplicities separated within a Sign. Each sign has 30°, 0°-29°. Each sign is divided into three 10° sections known as decans. The decans of a sign are determined by the three signs belonging to the same element and their ruling planets. Decans provide nuanced variations within each astrological sign, highlighting subtle differences in their expression and characteristics.
- The first decan is 0° to 9° of a sign.
- The second decan is 0° degrees to 19° of a sign.
- The third decan is 20° degrees to 29° of a sign.
For example, if we used Aries Decans, an Aries Venus at 3° is considered an Aries Decan. Aries Venus at 18° is considered a Leo Decan. An Aries Venus at 27° is considered a Sagittarius Decan.
Each Decan will have the expression of that sign. I am a Sagittarius Decan therefore, I like to express myself as being knowledgeable, I enjoy travelling, trying new things, and the men i choose to date tend to have Sagittarius qualities about them (as the Sun can link us to the men in our lives too).