Canonical Shastric Lexicon
37 Sanskrit, mathematical, astronomical and architectural terms from Vedic literature, the classical treatises, and the computational implementations that follow them.
The fundamental unit of civil and sacred Vedic time, measured strictly from local apparent sunrise (Sūryodaya) to the subsequent sunrise.
The angular separation between the moving Tropical Vernal Equinox (Sayana 0° Aries) and the fixed Sidereal Zodiac (Nirayana 0° Mesha). Pūjāvāni implements the statutory Chitrapaksha / Lahiri standard (~24.23° in 2026).
The classical astronomical imperative championed by Aryabhata and Bhaskara II asserting that theoretical calculations must strictly agree with empirical sky observations.
A period during which the celestial longitudinal elongation of the Moon from the Sun increases by exactly 12°. There are 30 Tithis in a synodic lunar month.
One half of the synodic lunar month: Śukla Pakṣa (waxing, from New Moon to Full Moon) and Kṛṣṇa Pakṣa (waning, from Full Moon to New Moon).
The sidereal ecliptic divided into 27 equal 13°20′ arcs, each governed by a Vedic deity and characterized by fixed marker stars (Yogatārās).
One quarter of a Nakshatra arc (3°20′). A 108-pada cycle completes the 12 signs of the D9 Navamsha chart.
The 27 mathematical intervals defined by the sum of the Sun and Moon sidereal longitudes: (λ_Sun + λ_Moon) mod 360° / 13°20′.
Half of a Tithi (6° lunar elongation). There are 60 Karanas in a lunar month, comprising 7 repeating Chara (movable) and 4 Sthira (fixed) Karanas.
A Tithi that begins after sunrise and ends before the subsequent sunrise, thus not coinciding with any Suryodaya.
A Tithi that is active during two consecutive sunrises due to slower lunar orbital velocity near apogee.
The exact degree of the sidereal ecliptic intersecting the eastern horizon at a given geographical observer latitude and Local Sidereal Time.
Scriptural environmental restriction window preceding an eclipse: 12 hours (4 Praharas) before a solar eclipse and 9 hours (3 Praharas) before a lunar eclipse, valid only where visible.
The canonical mandate that an astronomical eclipse or planetary conjunction carries ritual validity and dosha ONLY if physically visible above the local horizon.
The mathematical polygon centroid calculated via Shoelace integration around which the 16 cardinal and intercardinal directional zones radiate.
The central 1/9th (11.11%) zone in an 81-pad Paramasayika mandala (or central 4 pads in a 64-pad Manduka). Must remain structurally open (Śūnyatā), free of load-bearing pillars, toilets, or heavy equipment.
The canonical 9×9 spatial grid prescribed for residential homes, civic settlements, and educational campuses containing 45 deities.
The canonical 8×8 grid prescribed for temples, industrial production facilities, and royal palaces.
The primary diagonal lines running from NE to SW (Vāyu-Nirṛti) and NW to SE (Agni-Iśāna) intersecting at the Brahma Bindu.
Sensitive energy intersections within the mandala. Maha Marmas occur at major diagonal intersections and require an exclusion envelope r = 1/18 min(W, L) free of columns and structural penetrations.
The systematic geometric division of a plot or floor plan into dedicated micro-cells or deity zones.
The structural requirement for the Northeast (Iśāna) and Brahmasthana to maintain lower elevation, less mass, and maximum open volume.
Modular formula: (Perimeter in Hasta × 8) mod 12. Represents prosperity and energetic accumulation.
Modular formula: (Perimeter in Hasta × 9) mod 10. Represents resource depletion. Crucial condition: Aya must exceed Vyaya.
Modular formula: (Perimeter in Hasta × 3) mod 8. Remainder gives 1 of 8 animal archetypes (Dhvaja, Simha, Vrishabha, Gaja are auspicious).
Modular formula: (Perimeter in Hasta × 9) mod 7. Associates the physical structure with a governing planetary energy.
Modular formula: (Perimeter in Hasta × 27) mod 100. Measures the projected longevity and energetic durability of the building.
Standard canonical unit of measure equal to 24 Angulas (18 inches / 45.72 cm / 1.5 feet).
Ancient Sanskrit science of tree care, soil diagnostics, organic fertilizers, and cardinal botanical placement.
Micro-forest ecosystem comprising Aśvattha (East), Bilva (North), Vaṭa (West), Dhātrī (South), and Aśoka (South-East).
Ancient botanical stimulant made from fermented organic animal proteins, sesame oil, and botanical matter rich in nitrogen and microbial life.
Canonical prescriptions for cattle health, Goshala ventilation, non-slip flooring gradients, and zero-waste biogas/ark integration.
Celebrated author of Pañcasiddhāntikā, Bṛhat Saṃhitā, and Bṛhat Jātaka from Ujjain.
Pioneered diurnal rotation of Earth on its axis, epicyclic models, and sine tables in Āryabhaṭīya.
Author of Siddhānta Śiromaṇi; developed differential calculus principles, cyclic solutions (Cakravala), and planetary velocities.
Author of Samarāṅgaṇa Sūtradhāra, Yuktikalpataru; codified advanced civic town planning, mechanical robotics, and acoustics.
Formulated the Saha Ionization Equation; Chairman of the Government of India Calendar Reform Committee (1952–1955).