new UI draft · weby/en

Four Pillars Reading 四柱

Answers about your chart, from a date and time of birth.

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Date and time of birth

The chart is calculated inside this browser. The date and time you enter never leave it; only a summary of the result is sent, and only when an AI answer is being written.

Name or nickname
A label that tells your saved charts apart. Reading the same name again updates that record. It is kept in this browser only and never sent anywhere — set a save file under Saved charts and it is also written there, so it survives a new device or cleared browser data.
Calendar
Date of birth 8 digits
Time of birth 4 digits Hour (2) and minute (2), on a 24-hour clock. 8:30 am → 0830, 11:05 pm → 2305, the very end of the day 2400 → read as 23:59
Sex
Used to decide whether the luck cycles run forward or in reverse.
Advanced

The chart is built and explained in plain language below. The chart itself follows, and you can ask follow-up questions in the box under the explanation.

Ask and talk it through AI

Once the chart is built, a plain-language explanation appears here first, and you can ask more in the box below.

Keep talking with another AI

The button copies the calculated chart, the request wording and the conversation you have had here, then opens the AI you pick in a new tab. Paste it in (Ctrl+V, or ⌘V on a Mac) and that AI picks the thread up where you left it. Nothing is sent anywhere by this site on this route.

What gets copied includes the four pillars, five elements, ten gods, key element, luck cycles and annual luck, plus the date and time of birth.

Four Pillars

How the time and solar term were worked out

You and what surrounds you day master · elements · ten gods

The first three steps in reading a chart. First what your own force is, then what surrounds it, and last how those two stand to each other. The first two are separate stories; they meet in the third, and that is where the reading begins.

  1. 1Day master you

  2. 2Five elements the ground you stand on

    What the five elements mean
    Reading the figures in this chart

  3. 3Ten gods how you stand to what is around you

Stars auspicious · inauspicious

These stars point to traits of character, or to features of the surroundings.

Ten-year luck cycles

The cycles mark out life in ten-year stretches. If the chart is the vessel you were born with, a cycle is closer to what gets poured into it.

Open the luck cycles
How the cycles were set

Annual luck year by year

The stem and branch of each year, and how that year stands to your day master.

Open the annual luck
YearAgePillarTo the day masterIn a line

Detailed reading key element · structure · harmonies and clashes

What the cards above do not cover — the force that helps you (key element), the name for how the chart is built (structure), and the places worth watching (harmonies, clashes and the void).

Open the detailed reading

At a glance day master · strength · structure · key element · climate · void

The values from above, gathered into six panels. Each panel says what the term means and what the reading rests on.

Open the summary

Four Pillars astrology is a long-standing East Asian tradition of interpretation. Take what this page produces as cultural and recreational reading, not as grounds for decisions about medicine, law or money.
Calculated with korean-saju (KASI solar–lunar data 1900–2050 · solar terms 2000–2027, other years computed astronomically) · run in the browser by Pyodide.