Sun Sign in Western Astrology
or Tropical Astrology

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Sun Sign in Western or Tropical Astrology
The concept of the Sun Sign plays a central role in Western or Tropical Astrology. It represents the position of the Sun at the time of a person's birth and is used widely to describe one's personality, identity, and ego.
What is a Sun Sign?
In Western Astrology, the zodiac is divided into 12 equal parts of 30 degrees each, totaling 360 degrees. These 12 segments are the zodiac signs (Aries to Pisces), and the position of the Sun within these signs on your birth date determines your Sun Sign.
How Sun Sign is Calculated in Tropical Astrology
Western astrology uses the Tropical Zodiac, which is based on the Earth’s seasons rather than fixed constellations. The zodiac begins at 0° Aries at the Spring Equinox (around March 21st), and the Sun moves through each sign approximately every 30 days.
12 Sun Signs and Their Dates (Tropical Zodiac)
- Aries: March 21 – April 19
- Taurus: April 20 – May 20
- Gemini: May 21 – June 20
- Cancer: June 21 – July 22
- Leo: July 23 – August 22
- Virgo: August 23 – September 22
- Libra: September 23 – October 22
- Scorpio: October 23 – November 21
- Sagittarius: November 22 – December 21
- Capricorn: December 22 – January 19
- Aquarius: January 20 – February 18
- Pisces: February 19 – March 20
Difference Between Sun Sign and Moon Sign
While the Sun Sign represents your core identity and personality, the Moon Sign (used in Indian Vedic astrology) relates to your emotions, mind, and inner self. Vedic astrology gives more emphasis to the Moon Sign and the Ascendant (Lagna), while Western astrology emphasizes the Sun Sign.
Comparison with Indian Vedic Astrology
In Indian Vedic astrology, the Sidereal Zodiac (Nirayana) is used, which aligns with the actual constellations. This results in a shift of approximately 23–24 degrees backward from the Tropical Zodiac. Thus, most people will find that their Western Sun Sign differs from their Vedic Sun or Moon Sign.
Conclusion
The Sun Sign in Western astrology offers valuable insights into one’s basic character, preferences, and ego. Though it differs from the Vedic approach, it remains a widely popular and accessible form of astrological interpretation used globally for horoscopes and personality analysis.