Saju is a traditional way of arranging a birth moment into a structured chart.
The Korean word saju means “four pillars.” A calculation places the resolved birth year, month, day, and hour into four columns. The result is a time map: it records cyclical calendar positions before anyone begins interpreting personality, relationships, or timing.
Why four becomes eight
Each pillar contains two signs: one Heavenly Stem above and one Earthly Branch below.
Four pillars multiplied by two signs creates the “Eight Characters” in the name Saju Palja. The upper row contains four Heavenly Stems; the lower row contains four Earthly Branches. Together they carry yin or yang and Five-Element qualities within the chart’s calendar structure.
The year’s cycle
The seasonal cycle
The day’s cycle
The time cycle
If birth time is unknown, the Hour Pillar is withheld. A three-pillar record should not pretend to contain eight known characters.
The Day Master
The Heavenly Stem of the Day Pillar is called the Day Master.
It gives a reading its central reference point. The other signs and later timing layers can be described by how they relate to it. But the Day Master is not a complete personality label, and its element alone is not a verdict about the balance of the whole chart.
A chart is not yet a reading
Calculation establishes the record. Interpretation asks what its relationships may mean.
What the chart records
- Year, Month, Day, and—when known—Hour Pillars
- Heavenly Stems and Earthly Branches
- Yin, yang, and Five-Element correspondences
- The Day Master and fixed calendar relationships
What a reader considers
- Patterns among the whole set of pillars
- Season, context, interaction, and emphasis
- How later cycles meet the natal chart
- Which conclusions are supported—and which remain uncertain
One character can introduce a theme. It cannot replace the whole chart.
YourSaju keeps the verified Manse-ryeok birth record visible so calculated facts and symbolic interpretation do not blur together.