Free BaZi Chart Interpretation
Enter your birth date, time, and location. The system automatically calibrates true solar time, calculates your Four Pillars, and provides a citation-backed BaZi chart interpretation — a free natal-style BaZi reading.
Enter your birth details for a complete four-pillar chart and AI BaZi chart interpretation
Precision Astronomical Calibration
Date, time, and birthplace. True solar time is calculated automatically.
Multi-dimensional Pattern Analysis
Four pillars, hidden stems, ten gods, luck pillars, spirit stars — fully calculated.
Classical Text Citation
Analytical reading grounded in classical texts (Zi Ping Zhen Quan, Di Tian Sui). Citations included.
What Is a BaZi Chart?
A BaZi chart (Four Pillars of Destiny) is the foundational tool of Chinese astrology. It converts your birth date and time into four pairs of Heavenly Stems (天干) and Earthly Branches (地支) — the Year, Month, Day, and Hour Pillars. Each pillar consists of one Stem and one Branch, totaling eight characters. The classic Zi Ping Zhen Quan opens with: "The method of destiny analysis takes the Stem-Branch values of a person's birth year, month, day, and hour to deduce fortune and misfortune."
These eight characters are the starting point for all analysis — pattern determination, Useful God selection, and luck period forecasting. Deep Oracle's calculator uses precise astronomical algorithms to ensure every Stem and Branch value is accurate.
True Solar Time Correction
Traditional BaZi uses "true solar time," not standard clock time. True solar time is based on the sun's actual position relative to your birth location — each degree of longitude corresponds to a 4-minute time difference. For example: Beijing (116°E) differs from China Standard Time (120°E) by about 16 minutes; Urumqi (87°E) differs by about 132 minutes — over 2 hours.
Without this correction, the Hour Pillar can shift by 1-2 periods, causing systematic errors across the entire chart. This tool automatically applies true solar time correction based on your birth location coordinates — no manual conversion needed.
What's in Your Chart?
- Four Pillars (Stems & Branches) — Year, Month, Day, and Hour Pillars — each containing one Heavenly Stem and one Earthly Branch.
- Hidden Stems (藏干) — Stems concealed within each Branch, representing latent energies crucial for pattern and Useful God analysis.
- Ten Gods (十神) — Five-element relationships between your Day Master and all other characters, mapped to life domains.
- Branch Interactions — Clashes, combinations, punishments, harms, destructions, and hidden combinations that reveal deep structural dynamics.
- Spirit Stars (神煞) — 38 classical auxiliary stars — Nobleman, Academic Star, Blade, Peach Blossom, and more.
- Luck Pillars & Annual Cycles — Ten-year luck periods derived from the Month Pillar, combined with annual Stem-Branch cycles for timing analysis.
AI Overview Reading
After your chart is generated, the system automatically produces a free AI overview reading (3 per day). Grounded in three classical texts — Zi Ping Zhen Quan, Di Tian Sui, and Qiong Tong Bao Jian — it covers Day Master traits, preliminary pattern assessment, and current luck trends.
For deeper analysis, you can unlock a full AI detailed report: in-depth pattern and Useful God analysis, seven-dimension life reading (career, wealth, relationships, health, social, academic, annual cycles), and luck period forecasting — every point citing classical sources.
About the Four Pillars System
The Ten Heavenly Stems — Jia/Yi (Wood), Bing/Ding (Fire), Wu/Ji (Earth), Geng/Xin (Metal), Ren/Gui (Water) — each in Yang and Yin variants. The Twelve Earthly Branches — Zi through Hai — correspond to the Chinese zodiac animals, months, and seasonal energies. The producing cycle (Wood→Fire→Earth→Metal→Water→Wood) and controlling cycle (Wood→Earth→Water→Fire→Metal→Wood) form the analytical foundation of BaZi.
The Month Branch determines which element is "in season" — the primary reference for assessing Day Master strength. Spring (寅卯辰) favors Wood, Summer (巳午未) favors Fire, Autumn (申酉戌) favors Metal, Winter (亥子丑) favors Water.