- Bṛhat Parāśara Horā Śāstra
- Sāravalī
- Phaladīpikā
- Bṛhajjātaka
- Jaimini Sūtra
- Sūryasiddhānta
- Ṣaṭpañcāśikā
- Praśna Mārga
- Muhūrta Cintāmaṇi
इति ते ज्ञानमाख्यातं गुह्याद्गुह्यतरं मया ।विमृश्यैतदशेषेण यथेच्छसि तथा कुरु ॥
“Thus have I declared to you a knowledge more secret than all secrets. Reflect on it fully — then do as you choose.”
SIA gives you the knowledge. What you do with it is yours.
A whole life, drawn from the chart.
SIA draws this for every chart: a line for each part of life, birth to old age, opening on the years around today. It rises where the chart’s periods and the sky support the matter and falls where they resist it. The dashed line is that chart’s own normal. Yours will be your own.
A sample chart — born 14 February 1992, 4:10 am, Ujjain — and its career line, exactly as SIA’s engine computes it.
Everything cited. Every line traceable.
Computed for your minute
Every graha position is derived for your birth moment by SIA’s own engine — ahargaṇa, manda and śīghra corrections exactly as the Sūryasiddhānta prescribes, refined by SIA’s own planetary computation to a third of an arc-second. The sky your kundali stands on is calculated here, for your minute and your town.
Every sentence carries its verse
Each claim SIA makes arrives with the classical verse it rests on, and opens to it in one tap. The language model shapes the wording; the astrology comes straight from the texts.
English and हिन्दी, end to end
Charts, daśā tables, readings — the whole experience in both languages, with full Devanagari for the rāśis, nakṣatras and grahas.
The lagneśa stands in your 9th — the indications are of fortune: well-liked, a gifted speaker, endowed with family and wealth. BPHS C16.5
लग्नेशो नवमे पुंसो भाग्यवान् जनवल्लभः । विष्णुभक्तः पटुर्वाग्मी पुत्रदारधनैर्युतः ।।८।।
With the lord of the lagna in the ninth — fortunate, beloved of the people, devoted to Viṣṇu, a skilled speaker; endowed with children, spouse and wealth.
One engine, the whole jyotiṣa toolkit.
Your full natal chart, cast from first principles, with a verse-cited reading you can question.
36-guṇa aṣṭakūṭa matching with the doṣas and per-partner BPHS indications — deterministic and cited, row by row.
Your planetary periods on a timeline, each phase read in its own right — one of 18 daśā systems the engine computes.
The ṣoḍaśavarga — from the D-9 navāṃśa to the D-60 — each governing its own domain of life.
The auspicious window for what you are planning, computed for your place and moment.
Birth time not known? SIA’s own rectification: a booklet of everyday questions, answered against the texts, ending in a birth-time window with its reliability stated — and an honest "not resolved" when the evidence is thin.
Full kundali report
A hundred-page classical analysis of the whole chart, 800+ citations deep, as a shareable PDF.
From birth details to a sourced reading, in three steps.
Enter your birth details
Date, exact time, and place. That is all the engine needs.
SIA computes your chart
The Sūryasiddhānta’s own steps, refined to a third of an arc-second — the same mathematics the texts describe, computed live for your minute.
About every two hours the rising sign moves on. The houses stand; the signs step round. Ask anything, see the source
Every line of your reading points back to the classical verse it rests on.
A library, an observatory and a jurist — in one engine.
Every figure below is measured on the engine that serves you, and re-measured before it is printed here.
The whole library lives on the server, quotable line by line — Parāśara to the Sūryasiddhānta.
Each rule is a condition, a result and the verse it was drawn from; 1,340 distinct verses stand behind them.
Ten nakṣatra daśās and eight more — Vimśottarī to Kālacakra — computed by one verse-parametrised engine. One minute’s error in your birth time moves a mahādaśā by almost five days; ours moves it by less than an hour.
We don’t look the planets up in someone else’s table — we compute them ourselves. Your birth time is written to the nearest minute; this is hundreds of times finer, with the Sūryasiddhānta’s own steps printed beside it.
A hundred-page document with every line sourced — 108 pages in English, 94 in Hindi.
D-1 to D-60, with ṣaḍbala — the six-fold strength — and aṣṭakavarga with śodhana and piṇḍa behind every graha.
Kundali Milan scored the traditional way, each row carrying its verse and each doṣa weighed beside the total.
Lagna Shodhan recovers a lost birth time from what a person knows and is, one answer at a time.
102 test files, 30 audits and 116 modules that validate themselves at load — an ungrounded rule fails the build.
- Bṛhat Parāśara Horā Śāstra
- Sāravalī
- Phaladīpikā
- Bṛhajjātaka
- Jaimini Sūtra
- Sūryasiddhānta
- Ṣaṭpañcāśikā
- Praśna Mārga
- Muhūrta Cintāmaṇi
Nine classical works. Every verse quotable.
Straight answers.
What is SIA Vigyan?
SIA Vigyan is this website — siavigyan.com — the home of SIA, the Sanskritised Inference Algorithm: an online Janam Kundli, Vimśottarī daśā, Kundli Milan and verse-cited Jyotiṣa reading engine, in English and Hindi. It is built in India by SIA NextGen Technologies Pvt Ltd. SIA Vigyan, SIA Jyotish and SIA Kundali all name the same thing.
What does SIA stand for?
Sanskritised Inference Algorithm™. Sanskritised — the knowledge is the classical Sanskrit corpus itself, quoted in its own words. Inference — the engine reasons over what the texts state and adjudicates between them. Algorithm — every step is computed, checkable and the same for everyone. Vigyan (विज्ञान) is knowledge in its exact, tested form.
What does SIA cost?
Free, no sign-up to begin: any number of kundalis — each with its sixteen charts, the Panchang and every life graph from birth to today — and 3 questions a month. The years ahead open once — ₹99 for one area of life, ₹799 for everything on a kundali — or with a plan from ₹1,299 a month. More questions: 10 for ₹249.
What is Kundli Milan / Gun Milan?
The traditional 36-guṇa aṣṭakūṭa compatibility score between two charts, with the doṣas and per-partner indications from BPHS chapter 15 — computed deterministically, every point cited.
What is Lagna Shodhan?
Birth-time rectification — SIA’s own instrument for a birth time that is unknown or in doubt. You answer a booklet of plain yes-or-no questions about everyday nature and life; SIA weighs the answers against what the texts state about each rising sign and Moon sign, applies Parāśara’s own checks for a lagna, and states a birth-time window with its reliability — or says plainly that it cannot be resolved and what fact would settle it. Every plan includes it.
What makes a SIA reading trustworthy?
The astrology itself is computed — positions by SIA’s own engine to a third of an arc-second, verdicts by 2,575 rules drawn out of the classical texts — and every interpretive sentence carries the verse it came from, so you can open the source of any line. Where the śāstra is silent, SIA says so.
Is it available in Hindi?
Yes — the entire experience is bilingual, with full Devanagari for rāśis, nakṣatras and grahas. Switch anytime.
Which texts is it based on?
The Bṛhat Parāśara Horā Śāstra as the backbone, with Sāravalī, Phaladīpikā, Bṛhajjātaka, the Jaimini Sūtra, the Sūryasiddhānta, Ṣaṭpañcāśikā, Praśna Mārga and Muhūrta Cintāmaṇi — nine classical works, 6,200 verses, all on the server.
The śāstra, page by page — every fact with its verse.
Explainers and a reference built the way SIA builds a reading: facts drawn from the classical verses, each quoted with its edition gloss, every chip a real id in the store.
- Janam KundliWhat the birth chart holds and how it is computed.
- Kundli MilanThe 36 guṇas, kūṭa by kūṭa.
- Vimśottarī DaśāThe 120-year cycle and how it is counted.
- The 27 nakṣatrasLords, pādas, gaṇa, yoni, nāḍī.
- The 12 rāśisLords, natures, lagna results.
- The 9 grahasForm, kārakatva, dignities, friendships.
- Mangal DoshaMars on the marriage houses — what the texts state.
- PanchangTithi, vāra, nakṣatra, yoga, karaṇa — for any day.
- MuhurtaChoosing the moment: the nine tārās, the marriage windows.