Deanships of Signs, Ruling Planets and Dates




Deans allow us to understand better the characteristics of the person born under the influence of a particular sun sign.

The Deanships (or faces) allow us to understand better the characteristics of the person born under the influence of a particular sun sign.

Each sign comprises three decans that correspond to the division of the House of the sign on the Zodiac wheel. Discover how their ruling planets’ deans are defined and how their energies act on the astrological personality.

What are Deanships in Astrology?

When it appears to move around the Earth, the circle made by the Sun forms 360º. This wheel is divided into 12 segments, which correspond to the twelve signs of the Zodiac.

Each sign occupies a segment of 30º, which, in turn, is divided into three deans of 10º each. Each of these sections is ruled by a different planet.

The Deans on the Zodiac Wheel and the Astral Chart

As the Sun travels on the elliptical throughout the year, it travels the wheel of the Zodiac (counterclockwise), crossing each of the twelve signs. The cycle begins with the vernal equinox (approximately March 21), ushering in a new astrological year.

The circle that forms the Zodiac measures 360º and is divided into 12 parts, which correspond to the twelve signs. Each of these portions is approximately 30º (the twelve parts do not have precisely this measurement, but it has been agreed on this way since ancient times to facilitate the calculations).

The 30 degrees of each sign are divided, in turn, into three parts, forming the decans, which results in parts of 10 - the prefix “deca” means 10. Since each sign lasts approximately 30 days, each decanate covers ten days (approximately).

Thus, in the birth chart, the 360º is divided into 36 10º segments, and each segment corresponds to a ruling planet. In the letter, the analysis of the decans allows us to understand in what stage of life the energies of the planets tend to express themselves better (at the beginning, mid-life, or at the end of life).

How Are the Deans of Signs Calculated?

The signs are divided into degrees, as follows:

  • Aries - 1st to 29.59 °
  • Taurus - 30 ° to 59.59 °
  • Gemini - 60 ° to 89.59 °
  • Cancer - 90 ° to 119.59 °
  • Leo - 120 ° to 140.50 °
  • Virgo - 150 ° to 179.59 °
  • Libra - 180 ° to 209.59 °
  • Scorpio - 210 ° to 239.59 °
  • Sagittarius - 240 ° to 269.59 °
  • Capricorn - 270 ° to 299.59 °
  • Aquarius - 300 ° to 329.59 °
  • Pisces - 330 ° to 359.59 °

The Deaneries and their Ruling Planets

The study of the positioning of the planets in the birth chart and the aspects ( angles ) that they form with each other is one of the most relevant points in Astrology.

Each planet has a meaning for Astrology. Its charges and energetic temperaments influence the signs and the Houses (which represent the different spheres of our life, where the actions we practice are revealed).

The ruling planet of the first decan (born between 0º and 9.59º) of all the signs corresponds to the ruling planet of the sign itself. So, the first decans are ruled by the following planets:

  • Aries - Mars
  • Taurus - Venus
  • Gemini - Mercury
  • Cancer - Moon
  • Leo - Sun
  • Virgo - Mercury
  • Libra - Venus
  • Scorpio - Pluto (in Modern Astrology)
  • Sagittarius - Jupiter
  • Capricorn - Saturn
  • Aquarius - Uranus (in Modern Astrology)
  • Pisces - Neptune (in Modern Astrology)

The planets that rule the second decans (born between 10º and 19.59º) correspond to the planet that rules the next sign of the same element.

For example, Aries is a sign of the Fire element, with Leo being the next sign of the same element; therefore, the Sun (ruler of Leo) is the ruling planet of the second decan of Aries.

The definition of the ruling planets of the third decans born between 20º and 29.59º follows the same logic. In the same example, Sagittarius is Leo’s fire element sign. So, the ruling planet of Sagittarius (Jupiter) is the planet that rules the third decan of Aries.

  • 1st decan of Aries - Mars (ruling planet of the sign)
  • 2nd decan of Aries - Sun (ruling planet of Leo, sign following Aries of the Fire element)
  • 3rd decan of Aries - Jupiter (ruling planet of Sagittarius, sign of the Fire element that follows Leo)

Deanery Division

Considering the classification method discussed in the previous point, this is the division of the decans of the signs, according to the Elements to which they belong:

Deanships of the Signs of the Fire Element

Aries

1st decan - Mars (ruling planet)
2nd decan - Sun (influence of Leo)
3rd decan - Jupiter (influence of Sagittarius)

Leo

1st decan - Sun (ruling planet)
2nd decan - Jupiter (influence of Sagittarius)
3rd decan - Mars (influence of Aries)

Sagittarius

1st decan - Jupiter (ruling planet)
2nd decan - Mars (influence of Aries)
3rd decan - Sun (influence of Leo)

Deanships of the Signs of the Earth Element

Taurus

1st decan - Venus (ruling planet)
2nd decan - Mercury (Virgo influence)
3rd decan - Saturn (Capricorn influence)

Virgo

1st decan - Mercury (ruling planet)
2nd decan - Saturn (Capricorn influence)
3rd decan - Venus (Taurus influence)

Capricorn

1st decan - Saturn (ruling planet)
2nd decan - Venus (influence of Taurus)
3rd decan - Mercury (influence of Virgo)

Deans of the Signs of the Air Element

Gemini

1st decan - Mercury (
ruling planet) 2nd decan - Venus (influence of Libra)
3rd decan - Uranus (influence of Aquarius)

Libra

1st decan - Venus (ruling planet)
2nd decan - Saturn (Aquarius influence)
3rd decan - Mercury (Gemini influence)

Aquarium

1st decan - Saturn (ruling planet)
2nd decan - Mercury (Gemini influence)
3rd decan - Venus (Libra influence)

Deans of the Water Element Signs

Cancer

1st decan - Lua (ruling planet)
2nd decan - Pluto (influence of Scorpio)
3rd decan - Neptune (influence of Pisces)

Scorpio

1st decan - Mars (ruling planet)
2nd decan - Neptune (Pisces influence)
3rd decan - Moon (Cancer influence)

Pisces

1st decan - Neptune (ruling planet)
2nd decan - Moon (influence of Cancer)
3rd decan - Mars (influence of Scorpio)

Characteristics of Sign-to-Sign Deanships

Deans of Aries

1st decan - March 21 to March 31 - Regent Mars - the characteristics of Fire are reinforced by the influence of Mars, which makes the personality stormy, assertive, and energetic. Communication is direct, the mind impatient, and details relegated to the background. In love, they tend to fall torrid, but briefly.

2nd decan - April 1-10 - Sun Ruler - This planet offers a certain amount of aggressiveness in actions and attitudes and a leadership posture. The creative principle is expressed actively and spontaneously. Optimistic, he has a great capacity to recover from disappointment.

3rd decan - April 11-19 - Regent Jupiter - The presence of this planet provides expansion and good luck in challenges, in leadership roles, positions of responsibility. These natives are successful entrepreneurs, attracting big business and fortunes. They need to develop practicality and balance their gifts.

Learn more about Aries

Deanships of Taurus

1st decan - April 20-30 - ruler Venus - This planet favors free and easy relationships. However, it can also indicate an apparent coldness or superficial relationships that mask the difficulty of intimacy. Generous lovers like to kiss and touch.

2nd decan - May 1 to 10 - Ruler Mercury - The presence of this planet can make a person more practical and less prone to daydreaming.

3rd decan - May 11-20 - Ruler Saturn - The presence of this planet limits emotions, confidence, and the ability to take risks through cautious tendencies, emotional self-discipline, and respect for tradition.

Learn more about Taurus

Deans of Gemini

1st decan - May 21-30 - Mercury ruler - The presence of this planet leads the personality to speak faster and communicate more. Mercury in Gemini makes the person resourceful and intellectual, with a solid and agile mind and excellent communication skills.

2nd decan - May 31 to June 9 - Regent Venus - This planet favors free and easy relationships. However, it can also indicate an apparent coldness or superficial relationships that mask the difficulty of intimacy.

3rd decan - June 10-20 - Ruler Uranus - This planet tends towards chaos and eccentricity. It can be imaginative and revolutionary, rebellious and unstable.

Learn more about Gemini

Deanships of Cancer

1st decan - June 21 to 30 - Moon ruler - The presence of the Moon reinforces the mother nature of this sign and the tendency to care for others. Home and security are fundamental issues for this native. You need to find friends and live in an environment that understands and respects their extreme sensitivity.

2nd decan - July 1 to 10 - ruler Pluto - The presence of this planet denotes difficulties and challenges and significant changes in a person’s life.

3rd decan - July 11-21 - Regent Neptune - This planet confers a serene and dreamy disposition with a penchant for art and musical expression.

Learn more about Cancer

Deans of Leo

1st decan - July 22 to July 31 - Sun ruler - This planet gives a certain amount of aggressiveness in actions and attitudes and a leadership posture. The creative principle is expressed actively and spontaneously. Optimistic, you have a remarkable ability to bounce back from disappointment.

2nd decan - August 1 to 11 - Regent Jupiter - The presence of this planet provides expansion and good luck in challenges, in leadership roles, in positions of responsibility. They have a lot of physical strength, confidence, and optimism. They are charismatic, dignified, and tolerant leaders.

3rd decan - August 12-22 - Regent Mars - The characteristics of Fire are reinforced by the influence of Mars, making the personality stormy. They are seductive and sometimes dramatic souls. Loyal and loving, they are companions who demand a lot of attention. Creative, they are excellent leaders, although their excessive ego can make them eccentric and domineering.

Learn more about Leo

Deanships of Virgo

1st decan - August 23 to September 1 - Mercury ruler - The presence of this planet can make a person more practical and less prone to daydreaming. Mercury has excellent analytical, research, and writing skills. The mind is clear, bold, cunning, and organized. Practical and attentive to details, they are precise in their words.

2nd decan - September 2-11 - Ruler Saturn - The presence of this planet limits emotions, confidence, and the ability to take risks through cautious tendencies, emotional self-discipline, and respect for tradition.

3rd decan - September 12-22 - Regent Venus - This planet favors free and easy relationships. However, it can also indicate an apparent coldness or superficial relationships that mask the difficulty of intimacy.

Learn more about Virgo

Deanships of Libra

1st decan - from September 23 to October 1 - ruler Venus - This planet favors free and easy relationships. However, it can also indicate an apparent coldness or superficial relationships that mask the difficulty of intimacy. It reveals a penchant for art and romance.

2nd decan - October 2-11 - Ruler Saturn - The presence of this planet limits ease of communication, intimacy, and emotional connection with others through slow thought processes and the tendency to objectivity or points of view less conventional.

3rd decan - October 12-22 - Mercury ruler - The presence of this planet reinforces the desire for balance and harmony. Social and friendly, they work well in society, avoiding arguments and betting on the fair resolution of conflicts. The mind is intellectual and poetic.

Learn more about Libra

Deans of Scorpio

1st decan - October 23 to November 1 - Regent Mars - The presence of this planet transmits energy, confidence, and discipline. They are drawn to danger and mystery. Imaginative and creative, they can choose professions to express themselves artistically. Inclined towards jealousy, they can develop a controlling and resentful demeanor.

2nd decan - November 2 to 11 - Regent Neptune - This planet reinforces the will to destroy to build again. Fascinated by the hidden and the unknown, they break down barriers and try new solutions.

3rd decan - November 12-21 - Moon Ruler - This planet has a passionate and mysterious disposition. They are dedicated companions, committed to relationships with emotional meaning. Sensitive and insightful, these natives guide others on the path of self-discovery.

Learn more about Scorpio

Sagittarius Deans

1st decan - November 22 to December 1 - Ruler Jupiter - The presence of this planet provides expansion and good luck in challenges, leadership roles, positions of responsibility. The mind is open and optimistic. Generous and carefree, they inspire people who lead others to improve their skills and take risks.

2nd decan - December 2 to 11 - Regent Mars - The presence of this planet makes this native pragmatic and enthusiastic. They are optimistic and expansive, infecting everyone with their optimism. You are drawn to travel and adventure, pushing the barriers of safety in the name of learning and excitement.

3rd decan - December 12-21 - Sun ruler - This planet gives a certain amount of aggressiveness in actions and attitudes and a leadership posture. The creative principle is expressed actively and spontaneously. Optimistic, you have a remarkable ability to bounce back from disappointment.

Learn more about Sagittarius

Deanships of Capricorn

1st decan - December 22-31 - Ruler Saturn - The presence of this planet limits emotions, confidence, and the ability to take risks through cautious tendencies, emotional self-discipline, and respect for tradition.

2nd decan - January 1 to 10 - Regent Venus - This planet favors free and easy relationships. However, it can also indicate an apparent coldness or superficial relationships that mask the difficulty of intimacy.

3rd decan - January 11-19 - Ruler Mercury - The presence of this planet can make a person more practical and less prone to daydreaming. The mind is systematic, rational, and firm. They perform tasks with ambition and patience. They love practical disciplines and need to break information into smaller, more maneuverable chunks. They tend to avoid taking risks or find it challenging to share.

Learn more about Capricorn

Deanships of Aquarius

1st decan - January 20-30 - Ruler Saturn - The presence of this planet limits ease of communication, intimacy, and emotional connection with others through slow thought processes and the tendency to objectivity or points of view less conventional.

2nd decan - from January 31 to February 9 - Mercury ruler - The presence of this planet reinforces the creativity of this native. They are comprehensive and objective thinkers. They develop multiple interests and think about the common good. Very intuitive, your ideas come quickly and out of nowhere. Direct, your communication style can surprise the most sensitive people.

3rd decan - February 10-18 - ruler Venus - This planet favors free and easy relationships. However, it can also indicate an apparent coldness or superficial relationships that mask the difficulty of intimacy.

Learn more about Aquarius

Deanships of Pisces

1st decan - February 19-29 - Regent Neptune - This planet has a serene and dreamy disposition, with a penchant for the arts and musical expression.

2nd decan - March 1 to 10 - Moon Ruler - Can make emotions more sensitive, temperamental, deep, and complex. Extremely sensitive, they are capable of merging with other people’s emotions. They are capable of loving everything and everyone. They may have a hard time relating to the more practical issues in life. He is the eternal dreamer, the most imaginative soul who loves to escape fantasy.

3rd decan - March 11-20 - Regent Mars - The presence of this planet reinforces fantasy and emotion and may lack pragmatism and physical vigor. Sensitive souls need time alone to reflect and regenerate. Receptive and very romantic, they can fully merge with their partners.

Learn more about Pisces