Enter a Gregorian birth date, recorded clock time, birthplace and sex to cast a BaZi chart without an account or a name. The free result includes the Four Pillars, Day Master, Five Elements and a short character reading. If the birth hour is unknown, the calculator compares twelve candidate hours and keeps only what they share instead of filling in an invented hour pillar. Career, relationship, wealth, health and year-ahead readings are a separate one-time unlock saved to an account.
The form previews its true-solar-time arithmetic before casting. In a synthetic Vancouver example, it separated a −60-minute daylight-saving adjustment, −12 minutes for longitude and −6 minutes for the equation of time, yielding a −78-minute total and a 14:21 chart time from a 15:40 clock time. The public method also sets out historical IANA time zones, Li Chun for the year, sectional solar terms for the month, the late-Zi-hour convention and the weights used for Five Elements. AI receives the calculated chart as fixed data and writes an interpretation; it does not change the pillars or scores.
A separate article counts, across 40 cities and four reference years, how often the hour branch would differ without solar-time correction. Its machine-readable dataset is offered under CC BY 4.0, and the site keeps a dated corrections log. Auspice frames readings as material for reflection rather than predictions. Guest charts are stored under a random anonymous ID and can be retrieved with a 30-day visitor cookie; account data can be deleted after sign-in.
