Eastern system · 01

Zi Wei
Dou Shu

Examine the structural pattern of twelve palaces and their recorded stars. The baseline keeps civil fields, year boundaries, late-Zi handling and leap-month choices explicit.

Method: iztro 2.6.3
Ruleset: Default / zh-CN
Status: Golden not verified

Level 1 · Overview

Chart parameters

The module requires explicit calendar, time and boundary choices. Nothing is inferred from browser locale.

Birth details and calculation policies

Placement ruleset

The engine's default placement profile. It is not, by itself, a verified historical school or a Golden-qualified whole chart.

Engine algorithmdefaultImplemented scopeDefault placement profile onlyStatusGolden not verified

Calendar

Solar birth date

Gregorian date in YYYY-MM-DD form.

Civil time branch

Gender convention

Advanced period boundaries

Horoscope year/month boundary

Small-limit age boundary

These settings affect the stored ruleset identity and the engine's period APIs. The current natal chart renders decadal ranges and small-limit ages supplied by the engine.

IANA timezone

Asia/Shanghai is the supported civil timezone in this baseline. The input is checked for historical offset and DST ambiguity before calculation.

Year boundary

Late Zi rule

Lunar date is a leap month (Available for lunar input only)Apply the explicit leap-month fixing policy

Your chart will appear here.

Enter the birth fields, choose the traditional boundary rules, and calculate. The twelve palaces remain selectable after rendering.