Saju in one sentence
Saju, also called the Four Pillars, is a record of your birth year, month, day and hour, written as four pillars of two characters each. That makes eight characters in all, which is why Koreans also call it the Eight Characters. It uses the old stem-and-branch (Gan-ji) calendar to write down the moment a person was born. Reading a chart means looking at how those eight characters sit together. In Chinese the same system is known as BaZi.
How the eight characters are decided
Each pillar is a pair: a top character, the Heavenly Stem, and a bottom character, the Earthly Branch. The four pillars come from four parts of your birth moment.
- The year pillar changes at Ipchun, around February 4, not on January 1.
- The month pillar changes on a solar term, not on the 1st of the month.
- The day pillar moves forward one step every day, in a fixed cycle of 60.
- The hour pillar changes roughly every two hours.
Because the rules are fixed, the same birth date and time always give the same eight characters. A Saju calendar, also called a manseryeok, is the tool that does this calculation for you. Someone born in early February may find that the Saju year differs from the calendar year, which surprises many first-time readers.
What a chart is read for
Every character belongs to one of the Five Elements: Wood, Fire, Earth, Metal or Water. A reader looks at which elements are plentiful and which are missing, and at how the top character of your day pillar, your Day Master, relates to the other seven characters. Then comes the long view: every ten years a new pair of characters arrives, called a Dae-un cycle, and each year and month carries its own pair as well.
SajuPath takes these ideas and puts them in everyday words. Instead of long strings of technical terms you get short, plain sentences about your temperament, your relationships, your work and the way the years tend to feel.
A way to understand yourself, for fun
Saju is not a tool for telling the future. It is a framework for looking at your own temperament and rhythm, and many people enjoy it as a way of saying, "Ah, so that is how I tend to be." Take what rings true and leave the rest. If you are curious, the quickest first step is the free calculator, where you can see your own eight characters in a table without signing up. And whenever an unfamiliar word comes up, the glossary has a one-line answer for it.
What each pillar traditionally stands for
By tradition, the year pillar is read as your roots and early background, the month pillar as your work and the environment around you, the day pillar as yourself and the people closest to you, and the hour pillar as what you are growing toward. This split is less a fixed law than a framework that gives a reader a way to tell the story. SajuPath's report weaves the four pillars together in plain language across many chapters.
How Saju differs from your zodiac animal
Your zodiac animal is just one character of the eight: the bottom character of the year pillar, named after an animal. A Saju chart adds the month, day and hour pillars and the top characters as well, so it carries far more detail. If you already know your animal, think of Saju as the whole map that includes that one character.