Free Sun Sign Calculator — Sidereal Vedic Surya Rashi by Date of Birth

The direct answer: Free Sun Sign Calculator — Vedic Surya Rashi: Your Vedic Sun sign (Surya Rashi) is the sign the Sun occupied at birth in the sidereal zodiac — usually one sign earlier than your Western Sun sign. AskSoma publishes this at asksoma.ai/sun-sign-calculator as a free Vedic astrology resource using Swiss Ephemeris calculations and classical Jyotish interpretation — not generic sun-sign copy.

Your Vedic Sun sign (Surya Rashi) is the sign the Sun occupied at birth in the sidereal zodiac — usually one sign earlier than your Western Sun sign.

When people ask "what is my zodiac sign?", they almost always mean their Western Sun sign — the sign the Sun was in on their birthday, measured in the tropical zodiac that newspapers, apps and most US horoscopes use. That is the result this calculator shows first: your Sun sign, its exact degree, and a few plain-English lines on what it says about you. The Sun moves about one degree a day, so your birth date nearly always settles it; birth time only matters if you were born on the day the Sun changed signs.

Underneath, you get a second layer most Western calculators skip: your sidereal (Vedic) Sun. Vedic astrology — Jyotish — measures the same Sun against the fixed stars rather than the seasons, and today the two zodiacs sit about 24° apart (the Lahiri ayanamsa), so your Vedic Sun usually lands one sign earlier. That is not a contradiction; it is the same sky on two maps. AskSoma computes both from one Swiss Ephemeris position, then gives the Vedic Sun's house, dignity and Nakshatra — the details a Jyotishi reads.

The two traditions broadly agree on what the Sun means: identity, vitality, the will to be seen, and your relationship with authority. Where they differ is weight. Western sun-sign astrology puts the Sun centre stage; in Jyotish the Moon and the Ascendant are read first and the Sun is one major factor among several. For the fuller picture, pair this page with the Moon Sign Calculator and the Ascendant Calculator — together they give your Big Three.

The 12 Western Sun signs — dates and what each one means

Conventional tropical dates; the exact changeover can shift by a day between years, which the calculator resolves from the real Sun position.

Aries (Mar 21 – Apr 19)

You come alive when there is something to start, win or fix right now. Directness is your default — people usually know where they stand with you. Your growth edge is finishing what you began once the thrill of the start wears off.

Taurus (Apr 20 – May 20)

You build slowly and keep what you build — money, skills, relationships, routines. Comfort and quality matter to you, and you can tell the real thing from a cheap copy. Once you decide, you are very hard to move; that is both your loyalty and your stubborn streak.

Gemini (May 21 – Jun 20)

Curiosity drives you — you want to know a little about everything and talk about all of it. You think out loud and connect people and ideas that would never have met otherwise. Boredom is your real enemy, and you do your best work juggling more than one thread.

Cancer (Jun 21 – Jul 22)

Home and the people you count as family sit at the center of what you care about. You remember how things felt, not just what happened, and that memory shapes your choices. You protect others instinctively; learning to let others look after you is the harder skill.

Leo (Jul 23 – Aug 22)

You want your life to mean something people can see — creative work, leadership, a big heart on display. Generosity comes naturally, and you light up when the people around you shine too. Being overlooked stings more than criticism; learning to rate yourself without an audience is the work.

Virgo (Aug 23 – Sep 22)

You show care by being useful — fixing, editing, organizing, making things work better. You notice the detail everyone else missed, and you are often right about it. The growth edge is accepting "good enough" so that perfection does not stall progress.

Libra (Sep 23 – Oct 22)

You are built for partnership and do your best thinking in conversation with someone else. Fairness matters deeply to you, and you can see every side of an argument — sometimes too many. Beauty and good design are not extras for you; they change how you feel and work.

Scorpio (Oct 23 – Nov 21)

You go deep or not at all — surface-level anything bores you. You are perceptive about motives and hard to fool, which makes trust precious to you. Your strength is rebuilding after a setback; letting go of control is the lesson that keeps returning.

Sagittarius (Nov 22 – Dec 21)

You are driven by meaning — big questions, new places, a philosophy that makes sense of it all. Your optimism is contagious, and you would rather risk an adventure than play it safe. Honesty comes naturally; learning when blunt truth needs a softer delivery is the skill to build.

Capricorn (Dec 22 – Jan 19)

You think in long timelines and are willing to climb steadily toward a goal others gave up on. Responsibility suits you, and people often hand you the hard job because you will get it done. Your growth edge is letting yourself rest and enjoy the progress you have already made.

Aquarius (Jan 20 – Feb 18)

You think independently and care about the group, the cause, the future more than tradition. You are happiest building or improving a system — a community, a product, a better way of doing things. You can seem detached; the work is letting people close enough to see your warmth.

Pisces (Feb 19 – Mar 20)

You are imaginative and deeply empathetic, often feeling what others feel before they say it. Creativity, music, spirituality or service give your life its sense of purpose. Boundaries are the growth edge — protecting your energy lets your compassion last.

Western Sun sign → sidereal (Vedic) Sun — the usual shift

Here is how the second layer typically reads for each Western Sun sign. Exact boundary cases depend on your birth date and year — the calculator gives your specific position in both zodiacs.

Aries (Western) → Pisces (Vedic)

The Western Aries identity (bold, independent, first) reads in Jyotish through Pisces (imaginative, empathic, spiritual) — a dramatically different solar frame.

Taurus (Western) → Aries (Vedic)

Western Taurus (steady, sensory) becomes Vedic Aries (initiating, competitive). The reliability associated with Taurus reads differently through a Mars-ruled solar lens.

Gemini (Western) → Taurus (Vedic)

Western Gemini (quick, communicative) reads in Jyotish through the slower, more material Taurus. Gemini energy will show more prominently through Mercury placements.

Cancer (Western) → Gemini (Vedic)

Western Cancer's emotional depth and protection shift to a Gemini solar frame — more cerebral, curious, and socially versatile in the Vedic reading.

Leo (Western) → Cancer (Vedic)

Western Leo's warmth and leadership read through Cancer's nurturing and protective solar lens. The visibility drive may express through family or public-service rather than direct recognition.

Virgo (Western) → Leo (Vedic)

Western Virgo's precision and service shift to a Leo solar frame — the drive for excellence takes on a warmer, authority-seeking quality.

Libra (Western) → Virgo (Vedic)

Western Libra's relational balance reads through Virgo's analytical service orientation. Harmony is still sought but through discernment rather than aesthetics.

Scorpio (Western) → Libra (Vedic)

Western Scorpio's depth and intensity read through Libra's partnership and balance frame. The strategic quality remains; the expression becomes more relational.

Sagittarius (Western) → Scorpio (Vedic)

Western Sagittarian optimism and expansion read through Scorpio's depth and investigation. The seeking quality remains; the method becomes more penetrating.

Capricorn (Western) → Sagittarius (Vedic)

Western Capricorn's ambition and discipline read through Sagittarius's wisdom and ethics. Long-range goals remain; the frame adds philosophy and meaning.

Aquarius (Western) → Capricorn (Vedic)

Western Aquarian systems-thinking reads through Capricorn's structural authority. Reform energy channels through institutions rather than around them.

Pisces (Western) → Aquarius (Vedic)

Western Piscean empathy and spirituality read through Aquarius's collective and detached frame. Service remains; the delivery becomes more systemic.

Sun dignity — how freely your Surya expresses

The sign matters, but the Sun's dignity (how at home it is in the sign) shapes how the solar energy functions in your chart.

Exalted — Aries (10°)

The Sun at its highest functional clarity: leadership, vitality, confidence, and recognition-seeking are fully operative and self-directed.

Own sign — Leo (Simha)

The Sun at home: regal, warm, authority-conscious. Dignity and pride are well-supported; the need for recognition is natural rather than compensatory.

Moolatrikona — Leo 0°–20°

A specially empowered stretch of Leo where the Sun operates at administrative strength.

Debilitated — Libra (10°)

The Sun's authority and individuation meet the greatest resistance here — Libra's need for partnership and balance opposes Surya's natural self-assertion. Not weak as a person, but solar themes (status, recognition, father) may require more deliberate effort.

Friendly signs — Moon, Mars, Jupiter

The Sun in Cancer, Aries, Scorpio, Sagittarius, or Pisces is relatively comfortable — not at home, but working in supportive territory.

Combust planets

Any planet within about 6–14° of the Sun (varying by planet) is considered Asta (combust). The combust planet's karakas are muted — their natural themes recede in the chart. This is a house-specific effect, not a sign one.

Example result — a hypothetical birth on 15 July 1990, 12:00 noon, New York

1. Western (tropical) Sun: 22°54′ Cancer. July 15 falls inside Cancer's dates (Jun 21 – Jul 22), so the birthday alone already gave the sign; the degree places the Sun in the last third of it.
2. What a Cancer Sun means: Home and the people you count as family sit at the center of what you care about. You remember how things felt, not just what happened, and that memory shapes your choices. You protect others instinctively; learning to let others look after you is the harder skill.
3. Sidereal (Vedic) Sun: subtract that date's Lahiri ayanamsa of 23°43′. 22°54′ Cancer is 112°54′ of the zodiac; 112°54′ − 23°43′ = 89°11′, which is 29°11′ Gemini — 49′ short of the Cancer boundary.
4. So the same person is a Western Cancer and a Vedic Gemini Sun. The calculator shows both; Vedic timing (Dasha, transits) reads the Gemini layer.

Same Sun, two zodiacs: Cancer in the Western reading, Gemini in the sidereal one. Neither cancels the other.

Computing the sidereal shift — the 24° offset explained with arithmetic

1. Take a Western Sun position of 20° Leo (tropical). The current Lahiri ayanamsa is approximately 23°51′ (increasing ~50.3″ per year; the exact value for your birth year is what Swiss Ephemeris uses).
2. Subtract the ayanamsa from the tropical longitude: 20° Leo − 23°51′ = −3°51′ into Leo. In degrees across the zodiac, Leo begins at 120°, so 120° + 20° = 140° (tropical). 140° − 23°51′ = 116°09′ sidereal, which falls at 26°09′ Cancer (Karka).
3. So a "20° Leo Sun" by the Western reading becomes approximately "26° Cancer Sun" in Jyotish — a full sign earlier, and now read through Cancer's themes (home, emotion, the public, nurturing) rather than Leo's (authority, recognition, performance).
4. This calculation is exact and repeatable. AskSoma runs it via Swiss Ephemeris for your exact birth date and time, which removes the approximation. You can cross-check by running the same birth data through any Swiss Ephemeris library with Lahiri ayanamsa enabled.

The sidereal shift is not a "correction" of Western astrology — both systems are internally consistent. The Vedic system tracks the actual star positions; the Western tracks the seasons. This calculator shows your Western Sun first and your Vedic Sun as the second layer.

What this tool can NOT tell you

• In Vedic astrology the Sun sign is one of twelve major chart factors — not the primary one. The Moon sign (Rashi) and Ascendant (Lagna) are the first and second read in Jyotish. If you came here expecting Vedic readings to behave like Western Sun-sign horoscopes, they will not — and that is a feature, not a limitation.
• Sun sign alone cannot give you timing, compatibility, or remedy guidance. Those require the full chart, Dasha, and transits. Use this page as an entry point into the chart, not as a standalone reading.
• Near a sign boundary (within 1–2 days of the Sun changing signs), the date table can mislead in either zodiac — the changeover moves by about a day between years. Add birth time and place and the calculator reads the actual Sun position.
• The Sun's house placement matters at least as much as its sign. Sun in Leo in the 12th house (hidden, behind the scenes) is categorically different from Sun in Leo in the 10th (public authority). Both are Leo Suns, but very different lives.

Computed with Swiss Ephemeris, Lahiri ayanamsa · Content reviewed 2026-10-02

Frequently asked questions

What is my zodiac sign by birthday?

Find your birthday in the Western (tropical) dates: Aries Mar 21 – Apr 19; Taurus Apr 20 – May 20; Gemini May 21 – Jun 20; Cancer Jun 21 – Jul 22; Leo Jul 23 – Aug 22; Virgo Aug 23 – Sep 22; Libra Sep 23 – Oct 22; Scorpio Oct 23 – Nov 21; Sagittarius Nov 22 – Dec 21; Capricorn Dec 22 – Jan 19; Aquarius Jan 20 – Feb 18; Pisces Feb 19 – Mar 20. If you were born on a changeover day, add your birth time and place above — the exact boundary moves by about a day between years.

Which is right — my Western sign or my Vedic sign?

Both are consistent readings of the same sky. The Western (tropical) zodiac is tied to the seasons and is the one most horoscopes use; the sidereal (Vedic) zodiac is tied to the fixed stars and is the one Jyotish uses for Dasha and timing. This calculator shows your Western sign first and your Vedic sign as the second layer of your chart.

Free Sun Sign Calculator — Sidereal Vedic Surya Rashi by Date of Birth — frequently asked

What is my Sun sign?

Your Sun sign is the zodiac sign the Sun was in when you were born. In the Western (tropical) zodiac, the one most horoscopes and magazines use, your birth date fixes it except on the day the Sun changes sign. This calculator shows that Western sign first, then your sidereal (Vedic) Sun sign as the second layer of the same chart.

Why is my Vedic Sun sign different from my Western Sun sign?

Both read the same Sun, measured against two different zodiacs. The Western (tropical) zodiac is pinned to the seasons; the sidereal zodiac used in Vedic astrology is pinned to the fixed stars. The gap between them, called the ayanamsa, is currently about 24°, so most people's Vedic Sun sign is one sign earlier than their Western one (a Western Aries is often a Vedic Pisces) and some keep the same sign. Neither replaces the other.

Does Sun sign matter in Vedic astrology?

Yes, but differently. Western astrology leads with the Sun sign; Vedic astrology reads the Sun alongside the Moon sign (Rashi), Ascendant (Lagna), and Nakshatra. In the Vedic layer the Sun represents vitality, authority, the father, career standing, and your relationship with government or institutions. Its house placement and dignity show where you naturally seek recognition and leadership.

How is Sun sign different from Ascendant?

Your Sun sign reflects your core identity, vitality, and ego expression. Your Ascendant (rising sign) reflects your outward personality, physical appearance, and how others perceive you. Both are important in either zodiac: the Sun shows who you are internally, the Ascendant shows how you present externally.

How do I find my Sun sign by date of birth?

Enter your date of birth: the date alone gives your Western Sun sign, except on a sign-change day. Add your exact time and place for the Sun's precise degree and the sidereal (Vedic) layer: the calculator applies the Lahiri ayanamsa to the same Sun position to give your Vedic Sun sign (Surya Rashi), with the house and Nakshatra the Sun occupies. Because the Sun moves about 1° per day, the time mainly refines the house and Nakshatra.