Free Jyotish tool
Vedic Sun Sign Calculator
Discover your sidereal sun sign — the sign used in Jyotish (Indian Vedic astrology). For most people, it is one sign earlier than their Western sign. Find out yours.
Enter your date of birth
We calculate both your Western (tropical) sun sign and your Vedic (sidereal) sun sign using the Lahiri ayanamsha.
Tropical vs. Sidereal — the core difference
Tropical (Western)
Anchors 0° Aries to the Vernal Equinox — the first day of spring in the Northern Hemisphere. This means the zodiac is tied to Earth's seasons, not the actual star positions. When you read a Western horoscope, your sign is season-based.
Sidereal (Vedic)
Anchors 0° Aries to the fixed stars — specifically to the constellation Aries in the sky. This means your Vedic sign reflects where the sun actually was among the stars on the day you were born, corrected for the ~24° shift that has accumulated since the tropical and sidereal systems were last aligned.
Because the Earth's axis wobbles slowly (precession of the equinoxes), the gap between these two systems grows by about 1° every 72 years. Two thousand years ago the systems roughly coincided. Today the difference — called the ayanamsha — is approximately 24°.
Which zodiac should you use?
There is no single correct answer — both systems are internally consistent and have deep traditions behind them. The question is what you are trying to understand.
- Western tropical astrology is primarily used for psychological and humanistic astrology — understanding personality, inner life, relationship dynamics, and personal growth. Most popular astrology content (horoscopes, personality guides) uses this system.
- Vedic sidereal astrology (Jyotish) is the traditional system of India, with over 5,000 years of continuous practice. It is more oriented toward predictive and karmic work — timing events, understanding life purpose, and reading the influence of current planetary periods (dashas). Many people who study Jyotish feel it is more precisely predictive.
Many serious astrologers study both. Your Vedic sun sign is worth knowing — not to replace your Western sign, but to see yourself from a different and often illuminating angle.
Western to Vedic sun sign — typical shift
For most birthdays (not near sign cusps), your Vedic sun sign is the sign immediately before your Western sign. Use the calculator above for your exact date.
Frequently asked questions
What is the difference between Vedic and Western astrology sun sign?
Your Western sun sign is calculated using the tropical zodiac, which anchors 0° Aries to the Vernal Equinox (the first day of spring). Your Vedic sun sign uses the sidereal zodiac, which anchors 0° Aries to the actual position of the constellation Aries in the sky. Because of Earth's axial wobble (precession of the equinoxes), these two reference points are currently about 24° apart — which means most people's Vedic sun sign is the sign before their Western sun sign.
Why is my Vedic sign different from my Western sign?
The Earth's rotational axis completes a slow wobble called the precession of the equinoxes over about 26,000 years. This has caused the Vernal Equinox point to drift backward through the constellations by roughly 1° every 72 years. When the Western tropical zodiac was formalized about 2,000 years ago, the two systems were roughly aligned. Today they are approximately 24° apart. This gap — called the ayanamsha — is subtracted from your tropical sun position to get your sidereal (Vedic) position.
Which zodiac is more accurate, tropical or sidereal?
Neither is inherently more accurate — they measure different things with different reference points. The tropical zodiac is tied to Earth's seasons and is the foundation of Western psychological and humanistic astrology. The sidereal zodiac is tied to the actual stellar backdrop and is used in Jyotish (Indian Vedic astrology) for predictive and karmic work. Both systems have thousands of years of accumulated tradition and internal consistency. Many astrologers study both.
What is the ayanamsha?
The ayanamsha is the degree of offset between the tropical and sidereal zodiacs at any given point in time. The most widely used ayanamsha in Jyotish is the Lahiri ayanamsha, officially adopted by the Indian government for calendar purposes. As of 2026 it is approximately 24.13°. Other ayanamshas exist (Raman, Krishnamurti, Fagan-Bradley) and differ slightly — different Vedic traditions use different ayanamshas, which can shift sign placements by a degree or two.
I'm Scorpio Western — what is my Vedic sign?
If your Western sun sign is Scorpio, your Vedic sun sign is most likely Libra — because the ~24° ayanamsha shifts most people back one sign. However, if your birthday falls in the very early degrees of Scorpio (October 23–24 approximately), your sun may still be in late Libra tropically, and the sidereal calculation would depend on your exact birth date. Use the calculator above with your specific birth date to get the precise answer.
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