True sidereal astrology vs western astrology
- Isa Bella Goossens
- Dec 26, 2024
- 2 min read
Updated: Oct 9
Key Differences: True Sidereal Astrology vs. Western Astrology
The primary distinction between True Sidereal Astrology and Western Astrology lies in how each system measures the positions of celestial bodies and calculates the zodiac signs:
1. Zodiac Measurement: Fixed Stars vs. Seasons
True Sidereal Astrology:
Aligns zodiac signs with the actual positions of constellations as they appear today (accurately aligned with astronomy).
Considers Earth's precession, a gradual wobble in its axis that shifts the position of constellations over time.
Reflects the current positions of the Sun, Moon, and planets relative to the stars.
Western Astrology:
Uses the tropical zodiac, which is fixed to the Earth's seasons rather than the stars.
Begins at the Spring Equinox (0° Aries), dividing the year into 12 equal 30° parts, irrespective of the stars' actual positions.
Does not account for precession, so the zodiac signs have drifted about 24° away from their original constellations over the past 2,000 years. ⏳
2. Zodiac Signs: Uneven Sizes vs. Equal Parts
True Sidereal Astrology:
Acknowledges the unequal sizes of the zodiac constellations (e.g., Virgo is much larger than Cancer).
Includes Ophiuchus, the 13th zodiac sign, spanning from November 29 to December 17.
Western Astrology:
Divides the zodiac into 12 equal 30° parts, ignoring the actual sizes of the constellations.
Does not include Ophiuchus, the 13th sign.
3. Focus: Astronomical vs. Archetypal
True Sidereal Astrology:
Focuses on closely matching astronomical reality, grounded in the observable sky.
Appeals to those wanting astrology tied directly to the actual positions of stars.
Western Astrology:
Focuses on archetypal meanings and psychological insights, emphasizing the symbolic relationship between zodiac signs and the Earth's seasons.
Operates as a symbolic system, rather than reflecting the sky’s current alignment.
Summary:
True Sidereal Astrology: Astronomically accurate, with unequal signs and the inclusion of Ophiuchus.
Western Astrology: Symbolic, season-based, and widely used in modern astrology.






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