One companion · four traditions · meet the cast
Your Chinese Birth Chart
Four pillars, five elements, one day master — the eastern map of what you were made of at the moment you arrived. Cast it below; no email needed.
When were you born?
Your birth date sets three of your four pillars.
How this chart calculates a luck-cycle starting age
The full chart uses lunar-typescript 1.8.6, Yun sect 1. It converts calendar-day and duration-index steps into an offset, derives a start date, and labels the first cycle by calendar year. The examples show those three outputs separately.
These are fictional software inputs checked against the configured functions, not customer stories, measured forecasts or practitioner approval.
| Example input | Direction | Selected Jie | Returned conversion offset | First cycle: year / age / pillar |
|---|---|---|---|---|
| 1990-07-15 12:00 Male formula branch | 庚 Forward to the next Jie | 立秋 · Li Qiu / Start of Autumn 1990-08-08 02:45:32 | 7 years, 10 months, 10 days 1998-05-25 12:00:00 | 1998 / 9 / 甲申 |
| 1990-07-15 12:00 Female formula branch | 庚 Backward to the previous Jie | 小暑 · Xiao Shu / Minor Heat 1990-07-07 17:00:28 | 2 years, 7 months, 0 days 1993-02-15 12:00:00 | 1993 / 4 / 壬午 |
| 1993-03-21 09:00 Female formula branch | 癸 Forward to the next Jie | 清明 · Qing Ming / Pure Brightness 1993-04-05 02:37:11 | 4 years, 10 months, 20 days 1998-02-10 09:00:00 | 1998 / 6 / 丙辰 |
| 2001-01-01 12:00* Female formula branch | 庚 Backward to the previous Jie | 大雪 · Da Xue / Major Snow 2000-12-07 03:37:02 | 8 years, 5 months, 10 days 2009-06-11 12:00:00 | 2009 / 9 / 丁亥 |
On a small screen, swipe the table sideways to see the offset and first cycle.
* Birth time is unknown. Noon was used as a calculation reference; the timing remains provisional and no Hour Pillar is inferred.
The age label uses start year − year of the library’s Gregorian birth reference + 1. Use that reference year, not the Li Chun-adjusted year; the label is neither a rounded conversion offset nor elapsed birthday age.
Timestamp strings preserve the configured engine’s calendar-clock coordinates. They are not a verified common UTC timeline or an independently checked historical ephemeris; compare the same time basis before comparing results.
This record makes the calculation inspectable. It does not establish the accuracy of a birth record or predict an event in a luck cycle.
AI-assisted explanation checked against the implementation. Independent practitioner review has not been verified. Updated:
The ten day masters
The heavenly stem of your birth day is the "you" at the center of the chart. Ten stems, ten temperaments — find yours.
