Bite-size learnings · The basics
Vedic vs Western astrology: why your Vedic sign is different
1. Two zodiacs, 24° apart
Both systems use the same 12 signs of 30°. The difference is where they start counting. The Western, tropical zodiac starts at the point where the Sun stands at the spring equinox, so it is tied to the seasons. The Vedic, sidereal zodiac starts from a fixed point among the stars.
About 1,700 years ago the two starting points coincided. Since then the Earth’s axis has slowly wobbled (the precession of the equinoxes), moving the equinox backwards against the stars by about one degree every 72 years. The gap, called the ayanamsa, is now about 24°. Indian panchangs and LotusAstro use the Lahiri ayanamsa.
2. Why your Sun sign usually moves back one
The Sun spends about 30 days in each sign. Subtract 24° and anyone born in roughly the first 24 days of a Western sign lands in the previous sign in the Vedic chart. That is about four people in five. If you were born in the last week of your Western sign, your Vedic Sun sign is usually the same.
| Sign | Vedic Sun dates (sidereal) | Western Sun dates (tropical) |
|---|---|---|
| Aries (Mesha) | 14 Apr – 14 May | 21 Mar – 19 Apr |
| Taurus (Vrishabha) | 15 May – 14 Jun | 20 Apr – 20 May |
| Gemini (Mithuna) | 15 Jun – 16 Jul | 21 May – 20 Jun |
| Cancer (Karka) | 17 Jul – 16 Aug | 21 Jun – 22 Jul |
| Leo (Simha) | 17 Aug – 16 Sep | 23 Jul – 22 Aug |
| Virgo (Kanya) | 17 Sep – 17 Oct | 23 Aug – 22 Sep |
| Libra (Tula) | 18 Oct – 16 Nov | 23 Sep – 22 Oct |
| Scorpio (Vrishchika) | 17 Nov – 15 Dec | 23 Oct – 21 Nov |
| Sagittarius (Dhanu) | 16 Dec – 13 Jan | 22 Nov – 21 Dec |
| Capricorn (Makara) | 14 Jan – 12 Feb | 22 Dec – 19 Jan |
| Aquarius (Kumbha) | 13 Feb – 14 Mar | 20 Jan – 18 Feb |
| Pisces (Meena) | 15 Mar – 13 Apr | 19 Feb – 20 Mar |
Dates are for 2026 (Sun’s sign at noon) and shift by a day in some years. Makar Sankranti, the Sun’s entry into Vedic Capricorn, falls on 14 or 15 January for this reason.
3. Jyotish puts the Moon first
Western horoscopes are read from the Sun sign. Jyotish reads daily life from the Moon sign (rashi), because the Moon stands for the mind, and builds the chart’s houses from the ascendant (lagna), the sign rising at your birth. So when someone asks your sign in an Indian family, they usually mean your rashi, not your Sun sign.
4. Other differences
| Vedic (Jyotish) | Western | |
|---|---|---|
| Zodiac | Sidereal, from the stars | Tropical, from the equinox |
| Main sign | Moon sign and ascendant | Sun sign |
| Planets | Nine grahas, including Rahu and Ketu (the Moon’s nodes) | Sun to Pluto, including Uranus, Neptune and Pluto |
| Lunar mansions | 27 nakshatras | Not used |
| Timing | Dasha periods (Vimshottari) and transits | Transits and progressions |
| Divisional charts | Navamsa (D9) and other vargas | Not used |
| Chart drawing | Square (North or South Indian style) | Round wheel |
5. Which one is right?
Neither zodiac is a mistake: one follows the seasons, the other the stars. What matters is using each system consistently. Mixing a Western Sun sign with Vedic rules, or reading a Vedic horoscope for your Western sign, gives the wrong answer. At LotusAstro we work only in the Vedic system, and we test its classical rules on real charts in our Sutras register.
Find your Vedic signsYour Vedic Sun sign, Moon sign and ascendant, calculated for your birth time and place.
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Frequently asked questions
Why is my Vedic sign different from my Western sign?
Western astrology measures the zodiac from the spring equinox (tropical); Vedic astrology measures it from the stars (sidereal). The two zodiacs have drifted about 24° apart, so most planets, including your Sun, fall one sign earlier in a Vedic chart for most people.
Is Vedic astrology more accurate than Western astrology?
They answer different questions with different tools, so neither is simply more accurate. Vedic astrology ties the signs to the actual stars and reads timing through the dasha periods; Western astrology ties them to the seasons and focuses more on personality. At LotusAstro we test the classical Vedic rules on real charts and publish the results.
Which sign should I use?
Use the one that belongs to the system you are reading. For anything Vedic (horoscopes by Moon sign, kundli matching, sade sati, dashas) use your Vedic signs, above all your Moon sign and ascendant.
What are the Vedic Sun sign dates?
Roughly: Aries 14 April–14 May, Taurus 15 May–14 June, Gemini 15 June–16 July, Cancer 17 July–16 August, Leo 17 August–16 September, Virgo 17 September–17 October, Libra 18 October–16 November, Scorpio 17 November–15 December, Sagittarius 16 December–13 January, Capricorn 14 January–12 February, Aquarius 13 February–14 March, Pisces 15 March–13 April. Dates shift by a day in some years.
What is the ayanamsa?
The ayanamsa is the gap between the tropical and sidereal zodiacs, about 24° in 2026. It grows by about one degree every 72 years because the Earth’s axis slowly wobbles (the precession of the equinoxes). Indian panchangs use the Lahiri ayanamsa, and so do we.