Your chart deserves
real mathematics
Most astrology apps use simplified approximations from the 1980s. Arcanavana uses the same professional astronomical models trusted by researchers and observatories — applied to all four traditions simultaneously.
Why precision matters in astrology
A 1° error in planetary position can shift your house cusps, change your Nakshatra, and alter your BaZi day master. These aren't small differences — they change the entire reading.
Observatory-Grade Planetary Positions
Every planet in your chart is calculated using the same high-precision astronomical models used by professional researchers and observatories. Not the simplified approximations used by most apps.
Lunar Precision to the Arcminute
The Moon moves fast — over 13° per day. A small error in your birth time creates a large error in your Moon sign and house. Our lunar model accounts for over 60 perturbation terms to place your Moon with exceptional accuracy.
Time Corrected to the Second
We account for the difference between atomic clock time and astronomical time — a correction that accumulates over decades and matters for anyone born before the 1990s. Most apps ignore this entirely.
Traditional Vedic Ayanamsa
Our Vedic calculations use the internationally recognised traditional ayanamsa — the same standard used by Jyotish practitioners worldwide, not a proprietary approximation.
Authentic Chinese Calendar
BaZi Four Pillars and Chinese Zodiac readings are calculated from the authentic traditional Chinese lunisolar calendar, correctly handling the solar term transitions that define each pillar.
Real-Time, Never Static
Your chart is calculated fresh every time — never served from a cached table of pre-computed positions. This matters for transits, progressions, and any time-sensitive reading.
Calculation accuracy at a glance
Arcanavana is designed for insight and reflection. For scientific or navigational use, consult a professional astronomer.
Four traditions. One precision standard.
Whether we're drawing your Western natal chart, your Vedic Kundli, your BaZi Four Pillars, or your Chinese Zodiac portrait — every calculation starts from the same precise astronomical foundation. The traditions differ in interpretation. The mathematics is uncompromising.
Experience the difference
Your birth moment encoded with professional precision across four ancient traditions.