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What would you like to know about your stars?

Exact Vedic astrology, calculated from your birth details and explained in plain English. Free.

Start with your birth details — the more exact the time, the better. They stay in your browser.

Date of birth

As exact as you can — from a birth certificate if possible. A few minutes can change the rising sign.

▸ Advanced settings (optional — the defaults suit most people)

Vedic astrology measures the zodiac from the fixed stars. Traditions place the starting point slightly differently (under 2°). Keep Lahiri unless you follow KP or Raman.

How the sky is divided into the 12 houses — the life areas like career, family and money.

Exact location

Only needed if your town isn't in the list. Leave the timezone blank to work it out from the coordinates (historical daylight saving is handled).

Just looking? (Steve Jobs, a public chart)

Charts, dates and timelines are free and need no account. For written answers, — free with a Google account.

Explore — free, no sign-up

About Ayana AI

Exact Vedic astrology, free

A free Vedic birth chart (kundli) with all 16 divisional charts, Vimśottarī daśā periods, Ashtakavarga, Ṣaḍbala strength and yogas — calculated with the Swiss Ephemeris and checked against published references.

Sade Sati, dated exactly

Every Sade Sati in your lifetime with exact phase dates, the life areas it touches for your chart, and month-by-month guidance — plus the Aṣṭama and Ardhāṣṭama Śani periods.

AI that only explains the math

Readings in plain English from the AI of your choice — it never calculates anything itself, only interprets the computed facts. Tendencies and timing, not verdicts. Open source.

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 explains those results in plain English. The AI never calculates anything itself — it only interprets numbers the engine already computed.

Is it free?

Yes. Birth charts, divisional charts, daśā timelines, transits and Sade Sati dates are free and need no sign-up. Written AI readings use your own AI key (Anthropic, OpenAI, Google Gemini and others), so you pay the AI provider directly — usually a fraction of a cent to a few cents per reading.

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 Drik Panchang and chart positions against AstroSage. 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.