Purple Star Astrology Chart Casting and Interpretation

Problem Addressed

The hardest part of Zi Wei Dou Shu chart casting is not star interpretation, but inconsistent upstream rules: uncorrected true solar time, unclear late zi hour handling, four transformations recorded by star name but not palace, and self-transformations wrongly derived from the year stem. This skill turns input, correction, chart construction, validation, and interpretation into a checkable pipeline for a consistent casting workflow.

How It Works

• Input validation: It requires birth date, gender, time in minutes, and location to county level; minute-level time and county-level location are the basis for longitude offset correction.
• Fixed rules: It follows Zhongzhou school four transformations and Wenmo Tianji defaults, treating 23:00–23:59 as the next day, calculating leap months in the current month, and using the first day of the first lunar month as the year boundary.
• Chart generation: It locates the destiny palace, body palace, five-element bureau, Zi Wei, fourteen major stars, and auxiliary stars, then marks four transformations from the birth-year stem; for the Geng stem, it maps Sun to Lu, Wuqu to Quan, Moon to Ke, and Tian Tong to Ji.
• Validation loop: It avoids subjective impressions and checks personality cues, family facts, major event years, and major-limit stages; if mismatches appear, it shifts by up to two hours to reduce open-ended trial and error.
• Interpretation output: Beyond structure, native four transformations, and flying-star four transformations, it layers major limits, yearly cycles, and monthly cycles, focusing on Ji placements, Ji clashes, double Ji intersections, and triple Ji overlaps.

Boundaries and Caveats

It is a structured inference workflow, not a universal metaphysical conclusion. The source notes that the body-palace table is still being verified and that self-transformations should be checked against a mature chart-casting tool; critical palaces, transformation placements, and self-transformation results still need cross-validation.