Śāstra & Gaṇita Knowledge Center
The definitive open computational reference for Vedic astronomy (Jyotiṣa), sacred architecture (Vāstu / Sthāpatya Veda), and multi-disciplinary place creation. Grounded in classical Sanskrit treatises, verified by Swiss Ephemeris mechanics, and reconciled with modern physics and building codes.
The 4 Pramāṇas: How We Guarantee Authenticity
Indian epistemology (Nyāya-Vaiśeṣika) demands strict validation before any claim is accepted as truth.
1. Śāstra Pramāṇa
Every rule explicitly cites its Sanskrit root treatise (*Mānasāra*, *Mayamata*, *Sūrya Siddhānta*, *BPHS*) with chapter, verse, and transliterated shlokas.
2. Gaṇita Pramāṇa
Uncompromising mathematical formulations: continuous root-finding, shoelace polygon centroid (*Nābhi*), and exact modulo arithmetic in sacred Hasta units.
3. Pratyakṣa Pramāṇa
Drik-tulyata observational fidelity: calculations must match the actual sky. Swiss Ephemeris DE431, topocentric horizons, and the limb and refraction flags each body is actually observed by.
4. Yukti Pramāṇa
Scientific and rational synthesis: circadian solar UV daylighting, infrared thermal inertia mass, leeward sanitation, and National Building Code (NBC 2016) compliance.
Core Reference Compendiums
Vedic Astronomy & Jyotiṣa
Cosmic Timing & Ephemeris MechanicsComplete mathematical derivations for the 5 Limbs of Panchanga (Tithi, Vara, Nakshatra, Yoga, Karana), continuous root-finding, Drik vs Siddhantic drift, Lahiri Chitrapaksha Ayanamsha, and what the engine's own test suite does and does not check.
Vāstu & Sthāpatya Veda
Sacred Computational GeometryVector mathematics for True North orientation, Shoelace polygon centroid (*Nābhi*), 16 directional zones ($22.5^\circ$), 32 entrance padas ($11.25^\circ$), Marma vulnerability buffers, Ayadi Shadvarga modular arithmetic, and NBC 2016 safety reconciliation.
IKS Living Place Creation
Multi-Disciplinary Shaastra StackThe 9-layer Shaastra-as-a-Service stack integrating Vāstu, Vṛkṣāyurveda arboriculture, Paśu Śāstra bovine welfare, Nāṭyaśāstra acoustic mandapas, and Arthaśāstra industrial manufacturing flow.
Step-by-Step Tutorials
Pedagogy, Manual Math & Practical Field GuidesPractical hand-calculation walkthroughs: derive a Panchanga from raw celestial coordinates, compute house Ayadi Shadvarga by hand, align to True North via solar gnomon (*Shanku*), and plan an industrial facility.
Interactive Formula Sandboxes
Experience the mathematical models live before diving into the formal specifications.
Panchanga limb sandbox
Illustration, not the engineMove either longitude and watch the three limbs that follow from them. This classifies a single instant; the engine additionally solves for the moment each limb ends, which is the figure an almanac actually publishes.
- Tithi — (Moon − Sun) mod 360, ÷ 12°
- Saptamī#7
- Śukla pakṣa (waxing) · elongation 82.70° · 89% elapsed
- Nakṣatra — Moon ÷ 13°20′
- Maghā
- #10 · pāda 3
- Yoga — (Sun + Moon) mod 360, ÷ 13°20′
- Harṣaṇa
- #14
Āyādi Ṣaḍvarga sandbox
Illustration, not the engineChange a dimension and watch the modular arithmetic move. The residues here are computed in the page so the steps are visible; the authoritative values come from the Vaasthu engine.
Perimeter = 2 × (L + W) ÷ 1.5 ft/hasta = 93 hasta
- Āya (×8 mod 12)
- 12
- Vyaya (×9 mod 10)
- 7
- Yoni (×3 mod 8)
- 7 · Gaja (Elephant)
- Vāra (×9 mod 7)
- Budha (Mercury)
- Nakṣatra (×8 mod 27)
- 15
- Āyu (×27 mod 100)
- 11
Āya clears Vyaya — the condition the set is checked for.
Yoni 7 (North) is an odd, favourable yoni — Exalted / abundance.
Canonical Primary Treatises Catalog
Every algorithm, layout rule, and celestial coordinate calculation in Pūjāvāni is directly mapped to the following ancient Sanskrit source treatises:
Solar-lunar mean motions, sidereal revolutions per Mahayuga, epicycles (*manda* and *shighra* corrections).
Definitive treatise on residential architecture, town planning, Ayadi Shadvarga formulas, and Hasta measurements.
Padavinyasa grid systems (81-pad Paramasayika, 64-pad Manduka), entrance doorways, and building orientation.
Encyclopedic Vedic science: Vāstuvidyā (Ch. 53), arboriculture (Vṛkṣāyurveda, Ch. 55), and astrological omens.
16-zone directional energetic allocations, Marma vital intersection lines, and room placement matrices.
83 chapters on royal palaces, town planning, mechanical devices (*yantras*), and structural aerodynamics.