# Ayana AI (astroayana.com)

> AstroAyana (Ayana AI): your Vedic birth chart (kundli), daśā periods and Sade Sati dates, computed with the Swiss Ephemeris and explained by an AI that never guesses a number. Free, no account.

Ayana AI is Vedic astrology with an open-source calculation engine (AGPL-3.0). Every position, divisional chart, daśā period and Saturn cycle is computed deterministically with the Swiss Ephemeris (sidereal zodiac, Lahiri ayanamsa) and verified against published references; an AI model only interprets the computed results, cites the placements behind each claim, and never calculates anything itself. The AI is not trained or fine-tuned on astrology: it is guided by a knowledge base written from the classical texts, and each knowledge section is measured on sample charts before it ships (results: https://www.astroayana.com/how-it-works). Calculations need no account and cost nothing. Birth details are never stored on Ayana's servers; saved charts stay in the visitor's browser.

## Tools
- [Sade Sati calculator](https://www.astroayana.com/sade-sati): Every Sade Sati of your lifetime, phase by phase, and what each tends to bring.
- [Birth chart (Kundli)](https://www.astroayana.com/chart): Every planet, sign and nakshatra at the moment of your birth, with all sixteen divisional charts.
- [Vimshottari dasha](https://www.astroayana.com/dasha): The period you're in, the one ahead, and exactly when it turns.
- [Strength & support](https://www.astroayana.com/ashtakavarga): Where your chart has strength to draw on, and what today's planets find there.
- [Planets & divisional charts](https://www.astroayana.com/planets): Sign, degree, nakshatra and house for every planet: the foundation of every reading.
- [Yogas](https://www.astroayana.com/yogas): The special combinations in your chart, what they tend to bring, and when each one gives.
- [Life timeline](https://www.astroayana.com/timeline): Your life's chapters and the tone the classical rules give each area, for reflection rather than prediction.
- [Ask Ayana](https://www.astroayana.com/ask): Career, relationships, timing: every answer cites the placements behind it.

## Sade Sati by Moon sign (as of 22 October 2026)
- [Today's panchang — free tool](https://www.astroayana.com/panchang): tithi, nakshatra, yoga, karana and vara with exact end times, sunrise and sunset, Rahu kalam, Abhijit, Choghadiya, Hora and the coming Ekadashi, Purnima and Amavasya for any city and date.
- [Planetary transits today — free tool, no birth details](https://www.astroayana.com/transits): where every planet is on any date in the sidereal zodiac (sign, nakshatra, retrograde) and when each one next changes sign.
- Saturn, Jupiter and Rahu–Ketu transit pages, every sign change for the next five years: https://www.astroayana.com/transits/saturn · https://www.astroayana.com/transits/jupiter · https://www.astroayana.com/transits/rahu-ketu
- [Retrograde calendar — free tool](https://www.astroayana.com/retrograde-calendar): every Mercury, Venus, Mars, Jupiter and Saturn retrograde in the year, stations to the minute (UT), with signs and degrees in the sidereal zodiac; other years via ?year=.
- [Kundli matching — free tool](https://www.astroayana.com/kundli-matching): the 36-point Ashtakoota (guna milan) for two people with every koota, Nadi and Bhakoot dosha, and a Manglik check for both; nothing saved.
- [Find my Moon sign — free tool](https://www.astroayana.com/moon-sign): your Vedic Moon sign (rashi) from birth date and place; the birth time is needed only if the Moon changed sign that day.
- [Sade Sati by rashi — free tool, no birth details](https://www.astroayana.com/sade-sati-by-rashi): who is in Sade Sati today, Saturn's next 10 years, find your Moon sign from your birth date and place.
In Sade Sati today: Aries (Mesh) — rising phase; Pisces (Meen) — peak phase; Aquarius (Kumbh) — setting phase.
- [Sade Sati for Aries Moon (Mesh rashi)](https://www.astroayana.com/sade-sati/aries): in Sade Sati 29 March 2025 – 30 May 2032
- [Sade Sati for Taurus Moon (Vrishabh rashi)](https://www.astroayana.com/sade-sati/taurus): next Sade Sati 2 June 2027 – 12 July 2034
- [Sade Sati for Gemini Moon (Mithun rashi)](https://www.astroayana.com/sade-sati/gemini): next Sade Sati 8 August 2029 – 27 August 2036
- [Sade Sati for Cancer Moon (Kark rashi)](https://www.astroayana.com/sade-sati/cancer): next Sade Sati 30 May 2032 – 12 July 2039
- [Sade Sati for Leo Moon (Simha rashi)](https://www.astroayana.com/sade-sati/leo): next Sade Sati 12 July 2034 – 26 September 2041
- [Sade Sati for Virgo Moon (Kanya rashi)](https://www.astroayana.com/sade-sati/virgo): next Sade Sati 27 August 2036 – 30 August 2044
- [Sade Sati for Libra Moon (Tula rashi)](https://www.astroayana.com/sade-sati/libra): next Sade Sati 22 October 2038 – 7 December 2046
- [Sade Sati for Scorpio Moon (Vrishchik rashi)](https://www.astroayana.com/sade-sati/scorpio): next Sade Sati 27 January 2041 – 4 December 2049
- [Sade Sati for Sagittarius Moon (Dhanu rashi)](https://www.astroayana.com/sade-sati/sagittarius): next Sade Sati 11 December 2043 – 24 February 2052
- [Sade Sati for Capricorn Moon (Makar rashi)](https://www.astroayana.com/sade-sati/capricorn): next Sade Sati 7 December 2046 – 5 February 2055
- [Sade Sati for Aquarius Moon (Kumbh rashi)](https://www.astroayana.com/sade-sati/aquarius): in Sade Sati 24 January 2020 – 23 February 2028
- [Sade Sati for Pisces Moon (Meen rashi)](https://www.astroayana.com/sade-sati/pisces): in Sade Sati 29 April 2022 – 17 April 2030

## How Ayana is measured
- [How Ayana works](https://www.astroayana.com/how-it-works): the engine computes, the AI only explains; results of every measurement.
- Transits — Wrong sign or house claims about where Saturn and Jupiter are: 46 % before, 0 % after (20 sample charts).
- Yogas — Answers naming alarming yogas (loss, illness, poverty): 19 of 20 before, 3 of 20 after (20 sample charts).
- Yogas — Wrong about which yogas are active in the current period: 24 of 43 before, 1 of 74 after (20 sample charts).
- Raja & Dhana yogas — Yogas named that the chart doesn't have: 3 before, 0 after (20 sample charts).
- Planetary periods — Agrees with the engine on how the main and sub-period fit: 3 of 11 before, 11 of 11 after (20 sample charts).
- Divisional charts — Verdict opposite to the engine's: 1 of 13 before, 0 of 13 after (20 sample charts).
- House rulers — Verdict opposite to the engine's: 4 of 9 before, 0 of 9 after (20 sample charts).
- Nakshatras — Answers using fear words: 3 of 20 before, 0 of 20 after (20 sample charts).
- Remedies — Suggests a purchase, paid ritual or paid consultation: 6 before, 0 after (20 sample charts).
- Timing: the classical timing rules were tested on 185 public figures with certificate birth times and did not place life events better than chance (ratio 0.93); periods are shown for reflection, not prediction.

## Common questions
- What is Ayana AI? Ayana AI is an AI-powered astrology experience built on the foundations of Jyotiṣa (Vedic astrology). Your birth chart, daśā periods and Sade Sati dates are calculated exactly with the Swiss Ephemeris; an AI model then interprets those results. The AI never calculates anything itself — it only explains numbers the engine has already computed, and cites the placements behind each claim.
- What does it cost? Nothing for the calculations — birth charts, divisional charts, daśā timelines, transits and Sade Sati dates need no account. Sade Sati dates, your current period and your signs are answered straight from your chart. Answers in words run on an AI account you connect: a free Google AI key, OpenRouter's free models in one click, or any provider's key, billed by that provider directly.
- Is the AI trained on astrology? No — it isn't trained or fine-tuned. It is guided: each answer gets the facts computed for your chart and a knowledge base written from the classical texts of Jyotiṣa, and each part of that knowledge is measured on sample charts before it ships. The results are published on the How Ayana works page.
- How do I calculate my Sade Sati dates? Create your chart with your date, time and place of birth, then open the Sade Sati tab. It lists every Sade Sati in your lifetime with exact start and end dates for each phase (rising, peak and setting), including the times Saturn steps back into a sign while retrograde, plus the related Aṣṭama and Ardhāṣṭama Śani periods.
- What is Sade Sati? Sade Sati is Saturn's roughly seven-and-a-half-year passage through the 12th, 1st and 2nd signs counted from your natal Moon. In Vedic astrology it is traditionally a period of pressure, responsibility and maturing. Ayana shows exactly when yours falls, which areas of life it touches for your chart, and month-by-month guidance — as tendencies, not verdicts.
- How accurate are the calculations? Planet positions come from the Swiss Ephemeris (Lahiri ayanāṁśa by default) and are checked against published references — Sade Sati ingress dates against a published panchang and chart positions against an independent reference. The biggest source of error is usually the birth time itself: a few minutes can change the rising sign.
- What if I don't know my exact birth time? You can still create a chart — tick “I don't know the exact time” and noon is used. Planet signs and daśā periods are usually still right, but the rising sign and houses may not be, so treat those parts with caution.
- Is my birth data private? On the public site, charts you save and readings you generate are stored only in your own browser, and any AI key you add stays in your browser too — it is passed straight to the AI provider and never stored. Ayana AI is open source, so you can check exactly what it does.
- Is Ayana's AI trained on astrology? No — the AI model is not trained or fine-tuned. Instead it is guided: every answer is given the facts the engine computed for your chart, plus a knowledge base written from the classical texts of Jyotiṣa that says how to describe them. Each knowledge section is measured on sample charts before it ships, and the before-and-after results are published on this page.
- How do you know the answers are right? The numbers are computed, not written by the AI: positions from the Swiss Ephemeris, checked against independent references. For the words, we check whether answers agree with what the engine computed — for example, wrong claims about where Saturn and Jupiter are fell from 46 % to 0 % once the engine's transit facts were added. Samples are small (20 charts per test) and were measured with one AI model; others may vary.
- Does Ayana predict when things will happen? No. We tested the classical timing rules on 185 public figures with certificate birth times and found they did not place life events — marriages, children, career peaks — better than chance. So Ayana shows your periods and transits with exact dates, and which yogas your current period activates, as a way to reflect on your life, not as a forecast.
- What does "a yoga is active in this period" mean? Classically, a yoga gives its results mainly while one of its planets runs a Mahadasha or sub-period. Ayana's engine checks each yoga's planets against your running periods and shows which ones are active now and in which years the others come up — computed, not guessed.
- Which AI does Ayana use? The one you connect: a free Google AI key, OpenRouter's free models, or any provider's key. The prompts and knowledge are tuned and measured with Claude; other models may vary. Whatever the model, it only receives computed facts and is told never to calculate or change a number.

## About
- Home: https://www.astroayana.com/
- Engine source code: https://gitlab.com/pradeepsiddappa/ayana-engine
- Predictions are framed as tendencies and timing, not verdicts.