Ancient Wisdom,
Modern Precision
Nine traditions. Swiss Ephemeris accuracy.
Privacy-first. Completely open source.
Where Stars Meet Code
For thousands of years, humans looked to the sky for guidance — mapping constellations, charting planetary cycles, and building systems of meaning. Every culture found its own patterns.
OrizonAstro brings nine of these traditions together, powered by the Swiss Ephemeris trusted by professional astronomers. Every calculation is transparent, every algorithm is open source, and your data never leaves your control.
No tracking. No paywalls. No black boxes.
Nine Traditions, One Platform
Each system calculated with precision, presented with clarity.
Western
Birth chart calculation with astronomical-grade precision
- Swiss Ephemeris planetary positions
- 12 house systems (Placidus, Whole Sign, Equal...)
- Aspect grid with configurable orbs
- AI-powered narrative interpretation
Vedic
Jyotish astrology with sidereal zodiac and Dasha periods
- Lahiri ayanamsa sidereal calculations
- 27 Nakshatra analysis with deities and symbols
- Vimshottari Dasha period timeline
- Muhurta auspicious timing
Chinese
Four Pillars (BaZi) and traditional animal zodiac
- Year, Month, Day, Hour pillars
- 12 animal zodiac with element cycles
- Wu Xing (Five Elements) balance analysis
- Day Master strength assessment
Tarot
Major and Minor Arcana readings with multiple spreads
- Full 78-card deck with custom artwork
- Celtic Cross, Three-Card, and more spreads
- 3D card flip animations
- AI-enhanced card interpretations
Numerology
Core numbers derived from your name and birth date
- Life Path, Expression, Soul Urge numbers
- Birthday and Personality numbers
- Pythagorean calculation method
- Number meaning and compatibility
I Ching
Hexagram casting with traditional divination methods
- Coin toss and yarrow stalk methods
- 64 hexagram interpretations
- Trigram analysis (upper and lower)
- AI chat with grounded guidance
Astrocartography
Planetary influence lines mapped across the globe
- Interactive world map with zoom and pan
- ASC, DSC, MC, IC lines for each planet
- Location proximity analysis
- Relocation chart insights
Business
Astrological timing and compatibility for organizations
- Electional astrology for key decisions
- Corporate natal chart analysis
- Team synastry and compatibility
- Auspicious date selection
History
Foundational texts of the astrological tradition
- Ptolemy's Tetrabiblos (150 CE)
- Annotated chapters with classical commentary
- Cross-referenced passages across traditions
- Interactive timeline of astrology history
Built for Depth
Tools that go beyond surface-level readings.
AI Interpretations
Multi-provider AI system (Anthropic, OpenAI, Ollama) with output guardrails and a knowledge base grounding every response in astrological tradition.
Interactive Visualizations
SVG birth chart wheels, interactive world maps, animated card spreads, and hexagram casting — all rendered in the browser.
PDF Export & Save
Export any chart or reading to a formatted PDF. Save to your account or locally in the browser. Pick up where you left off.
Privacy & Open Source
All calculations run server-side. API keys encrypted with AES-256-GCM. No tracking cookies. Full source code under AGPL-3.0.
How It Works
Enter your data
Birth date, time, and location — or cast cards, toss coins, enter your name.
Get precise calculations
Swiss Ephemeris engine processes your data server-side with astronomical accuracy.
Explore and save
Read AI interpretations, interact with visualizations, export PDF, save for later.
100% Free. Open Source. No Paywalls.
All calculations, all features, completely free. Your data stays private — we never sell or share it. Built with transparency you can verify.
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