♈ Aries

• Pisces/Aries Cusp: March 21 to March 25
• I. First Decan: March 21 to March 31
  • keyword ▸ “inspiration”
  • constellation ▸ Andromeda, the Chained Woman
  • planetary subruler ▸ Mars
• II. Second Decan: April 01 to April 10
  • keyword ▸ “innovation”
  • constellation ▸ Cetus, the Sea Monster
  • planetary subruler ▸ Sun
• III. Third Decan: April 11 to April 19
  • keyword ▸ “foresight”
  • constellation ▸ Cassiopeia, the Queen
  • planetary subruler ▸ Jupiter
• Aries/Taurus Cusp: April 15 to April 19

♉ Taurus

• Aries/Taurus Cusp: April 20 to April 24
• I. First Decan: April 20 to April 30
  • keyword ▸ “acquisition”
  • constellation ▸ Triangulum, the Triangle
  • planetary subruler ▸ Venus
• II. Second Decan: May 01 to May 10
  • keyword ▸ “evaluation”
  • constellation ▸ Eridanus, the River Po
  • planetary subruler ▸ Mercury
• III. Third Decan: May 11 to May 20
  • keyword ▸ “determination”
  • constellation ▸ Perseus, the Rescuer
  • planetary subruler ▸ Saturn
• Taurus/Gemini Cusp: May 16 to May 20

♊ Gemini

• Taurus/Gemini Cusp: May 21 to May 25
• I. First Decan: May 21 to May 31
  • keyword ▸ “ingenuity”
  • constellation ▸ Lepus, the Hare
  • planetary subruler ▸ Mercury
• II. Second Decan: June 01 to June 10
  • keyword ▸ “union”
  • constellation ▸ Orion, the Hunter
  • planetary subruler ▸ Venus
• III. Third Decan: June 11 to June 20
  • keyword ▸ “reason”
  • constellation ▸ Auriga, the Charioteer
  • planetary subruler ▸ Uranus
• Gemini/Cancer Cusp: June 16 to June 20

♋ Cancer

• Gemini/Cancer Cusp: June 21 to June 25
• I. First Decan: June 21 to June 30
  • keyword ▸ “receptiveness”
  • constellation ▸ Canis Minor, the Small Dog
  • planetary subruler ▸ Moon
• II. Second Decan: July 01 to July 11
  • keyword ▸ “intensity”
  • constellation ▸ Canis Major, the Great Dog
  • planetary subruler ▸ Pluto
• III. Third Decan: July 12 to July 22
  • keyword ▸ “empathy”
  • constellation ▸ Argo Navis, the Ship
  • planetary subruler ▸ Neptune
• Cancer/Leo Cusp: July 18 to July 22

♌ Leo

• Cancer/Leo Cusp: July 23 to July 27
• I. First Decan: July 23 to August 01
  • keyword ▸ “self-expression”
  • constellation ▸ Ursa Minor, the Small Bear
  • planetary subruler ▸ Sun
• II. Second Decan: August 02 to August 12
  • keyword ▸ “expansion”
  • constellation ▸ Ursa Major, the Great Bear
  • planetary subruler ▸ Jupiter
• III. Third Decan: August 13 to August 22
  • keyword ▸ “creativity”
  • constellation ▸ Hydra, the Water Serpent
  • planetary subruler ▸ Mars
• Leo/Virgo Cusp: August 18 to August 22

♍ Virgo

• Leo/Virgo Cusp: August 23 to August 27
• I. First Decan: August 23 to September 01
  • keyword ▸ “analysis”
  • constellation ▸ Crater, the Cup
  • planetary subruler ▸ Mercury
• II. Second Decan: September 02 to September 12
  • keyword ▸ “efficiency”
  • constellation ▸ Hercules, the Hero
  • planetary subruler ▸ Saturn
• III. Third Decan: September 13 to September 22
  • keyword ▸ “discrimination”
  • constellation ▸ Bootes, the Bear Driver
  • planetary subruler ▸ Venus
• Virgo/Libra Cusp: September 18 to September 22

♎ Libra

• Virgo/Libra Cusp: September 23 to September 27
• I. First Decan: Septmeber 23 to October 02
  • keyword ▸ “magnetism”
  • constellation ▸ Corvus, the Crow
  • planetary subruler ▸ Venus
• II. Second Decan: October 03 to October 13
  • keyword ▸ “endurance”
  • constellation ▸ Centaurus, the Centaur
  • planetary subruler ▸ Uranus
• III. Third Decan: October 14 to October 22
  • keyword ▸ “order”
  • constellation ▸ Corona Borealis, the Northern Crown
  • planetary subruler ▸ Mercury
• Libra/Scorpio Cusp: October 18 to October 22

♏ Scorpio

• Libra/Scorpio Cusp: October 23 to October 27
• I. First Decan: October 23 to November 01
  • keyword ▸ “integrity”
  • constellation ▸ Serpens, the Serpent
  • planetary subruler ▸ Pluto
• II. Second Decan: November 02 to November 11
  • keyword ▸ “regeneration”
  • constellation ▸ Lupus, the Wolf
  • planetary subruler ▸ Neptune
• III. Third Decan: November 12 to November 21
  • keyword ▸ “clarification”
  • constellation ▸ Aquila, the Eagle
  • planetary subruler ▸ Moon
• Scorpio/Sagittarius Cusp: November 17 to November 21

♐ Sagittarius

• Scorpio/Sagittarius Cusp: November 22 to November 26
• I. First Decan: November 22 to December 01
  • keyword ▸ “honesty”
  • constellation ▸ Ophiuchus, the Serpent-Holder
  • planetary subruler ▸ Jupiter
• II. Second Decan: December 02 to December 11
  • keyword ▸ “drive”
  • constellation ▸ Sagitta, the Arrow
  • planetary subruler ▸ Mars
• III. Third Decan: December 12 to December 21
  • keyword ▸ “intuition”
  • constellation ▸ Ara, the Altar of Dionysus
  • planetary subruler ▸ Sun
• Sagittarius/Capricorn Cusp: December 17 to December 21

♑ Capricorn

• Sagittarius/Capricorn Cusp: December 22 to December 26
• I. First Decan: December 22 to December 31
  • keyword ▸ “responsibility”
  • constellation ▸ Corona Australis, the Southern Crown
  • planetary subruler ▸ Saturn
• II. Second Decan: January 01 to January 10
  • keyword ▸ “fairness”
  • constellation ▸ Lyra, the Harp
  • planetary subruler ▸ Venus
• III. Third Decan: January 11 to January 19
  • keyword ▸ “honour”
  • constellation ▸ Draco, the Dragon
  • planetary subruler ▸ Mercury
• Capricorn/Aquarius Cusp: January 15 to January 19

♒ Aquarius

• Capricorn/Aquarius Cusp: January 20 to January 24
• I. First Decan: January 20 to January 29
  • keyword ▸ “knowledge”
  • constellation ▸ Delphinus, the Dolphin
  • planetary subruler ▸ Uranus
• II. Second Decan: January 30 to February 08
  • keyword ▸ “frankness”
  • constellation ▸ Piscis Austrinus, the Southern Fish
  • planetary subruler ▸ Mercury
• III. Third Decan: February 09 to February 18
  • keyword ▸ “association”
  • constellation ▸ Equuleus, the Little Horse
  • planetary subruler ▸ Venus
• Aquarius/Pisces Cusp: February 14 to February 18

♓ Pisces

• Aquarius/Pisces Cusp: February 19 to February 23
• I. First Decan: February 19 to February 29
  • keyword ▸ “imagination”
  • constellation ▸ Pegasus, the Winged Horse
  • planetary subruler ▸ Neptune
• II. Second Decan: March 01 to March 10
  • keyword ▸ “compassion”
  • constellation ▸ Cygnus, the Swan
  • planetary subruler ▸ Moon
• III. Third Decan: March 11 to March 20
  • keyword ▸ “action”
  • constellation ▸ Cepheus, the Monarch
  • planetary subruler ▸ Pluto
• Pisces/Aries Cusp: March 16 to March 20

⁂ source ▸ The Only Astrology Book You'll Ever Need, Joanna Martine Woolfolk (1982)