Aggregated study
BaZi statistics
on 3,604 public figures
An aggregated study calculated with Tian Mira, with true solar time correction. These statistics cover a corpus of documented public figures (Rodden Rating AA) sourced from Astro-Databank. No individual data is published.
Chinese zodiac signs
Distribution of the 12 signs
Each sign corresponds to the Earthly Branch of the year of birth pillar. The distribution is remarkably even across this corpus of 3,604 figures.
| Sign | Figures | % of corpus |
|---|---|---|
| Ox | 324 | 8.99% |
| Dog | 323 | 8.96% |
| Rooster | 322 | 8.94% |
| Pig | 316 | 8.77% |
| Horse | 312 | 8.66% |
| Snake | 308 | 8.55% |
| Goat | 299 | 8.30% |
| Rat | 290 | 8.05% |
| Rabbit | 289 | 8.02% |
| Monkey | 287 | 7.96% |
| Tiger | 269 | 7.46% |
| Dragon | 265 | 7.35% |
Day Masters
Distribution of the 10 Day Masters
The Day Master is the Heavenly Stem of the day of birth. It is the central reference point for any BaZi reading. The observed distribution is close to uniform.
| Day Master | Figures | % |
|---|---|---|
| 癸 Gui (Yin Water) | 389 | 10.79% |
| 己 Ji (Yin Earth) | 370 | 10.27% |
| 丙 Bing (Yang Fire) | 368 | 10.21% |
| 辛 Xin (Yin Metal) | 366 | 10.16% |
| 戊 Wu (Yang Earth) | 366 | 10.16% |
| 甲 Jia (Yang Wood) | 358 | 9.93% |
| 壬 Ren (Yang Water) | 358 | 9.93% |
| 丁 Ding (Yin Fire) | 355 | 9.85% |
| 乙 Yi (Yin Wood) | 341 | 9.46% |
| 庚 Geng (Yang Metal) | 333 | 9.24% |
Methodology
How are these statistics produced?
AA birth data
The corpus comes from Astro-Databank records with Rodden Rating AA, the highest level of documentary reliability for a birth time.
Birthplace
Each place is resolved via GeoNames (33,000+ cities) to obtain precise geographic coordinates.
Historical time zone
The exact time zone at the birth date is determined through the Intl API, accounting for historical changes (DST, reforms).
True solar correction
An astronomical correction (Spencer 1971 equation of time + longitude) is applied to obtain the local true solar time.
BaZi pillar calculation
The Tian Mira engine calculates the Four Pillars (year, month, day, hour) from the corrected solar time, via lunar-typescript and Jie Qi correction.
Statistical aggregation
Only aggregated counts are published here. No name, no date, no individual data is exposed.
Caution
What not to conclude
These statistics are descriptive. They do not demonstrate any causal link between a BaZi sign and a character trait, professional success, health condition or destiny.
- ✕No causality: the over-representation of a sign in this corpus proves nothing about people born under that sign.
- ✕No prediction: this data does not allow any future event to be predicted for anyone.
- ✕No medical conclusion: BaZi does not diagnose anything and does not replace medical advice.
- ✕No personality judgment: a sign or Day Master does not define a person's worth.
- ✕Non-representative corpus: this involves documented public figures, not a random sample of the world population.
- ✕Aggregated statistics only: this page contains no individual data, no names, no birth dates.
Sources
Data provenance
Source corpus: Astro-Databank records, sample C, filtered on public figures with Rodden Rating AA. The birth data (date, time, place) is documented and verified.
Calculations: Tian Mira engine — birthplace resolution, historical time zone, true solar time correction, Four Pillars BaZi calculation.
Usage: research, audit, aggregated statistics only. Non-commercial use. Attribution required: Astro-Databank / Astrodienst and Tian Mira.
Exclusions: no biography, no image, no editorial note, no prediction, no individual interpretation.
Technical index
Browse technical calculations
The aggregated study can be complemented by a technical index of figures: name, source, Rodden Rating, true solar time, BaZi pillars, Day Master and year animal. No individual interpretation is provided.
Explore the technical indexPublic files
Public files for AI and verification
Tian Mira publishes a public bundle of aggregated statistics, intended for research, audit and verification. These files are freely accessible and contain no individual data.
- Bundle READMEGeneral presentation of the public dataset
- MethodologyDetailed calculation method (6 steps)
- Rights and limitsTerms of use and restrictions
- Dataset JSON-LDSchema.org description of the dataset
- Quality reportAggregated quality metrics
- V2 Weighting MethodDocumented Tian Mira V2 weighting grid
- V2 JSON coefficientsMachine-readable weighting coefficients
- Stats CSV — AnimalsDistribution of the 12 Chinese zodiac signs
- Stats CSV — Day MastersDistribution of the 10 Day Masters
- Stats CSV — Countries by signCountries normalised by zodiac animal
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