Zi Wei chart

Zi Wei Dou Shu (Purple Star Astrology) places the Life Palace, Body Palace and twelve palaces from the lunar birth date and hour, then distributes the fourteen major stars and supporting stars. Decade periods and annual charts show change over time.

This tool uses the default rules of the open-source iztro library to show stars in each palace, decade age ranges, and the palaces and Four Transformations for the current decade and year. Notes describe structure, not predictions.

Four Pillars uses Beginning of Spring for the year and solar terms for months. The selected day boundary applies. Zi Wei uses iztro default stars, lunar New Year, and adjusted leap months: days 1–15 use the current month, later days the next. Schools may differ. Engines: lunar-javascript and iztro.

1. Enter your details in the form on the left (a date, number or name). Fields marked optional can be skipped.
2. Press the button; the result is worked out instantly in your browser and shown in the middle.
3. Treat the result as a reference; change an input and run it again to compare.

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