What Is Saju?

What Is Saju?

If you have ever looked up a birth chart, you already know the starting point of saju. You need the year, month, day and hour you were born. Western astrology turns those details into a map of the sky. Saju turns them into a short line of eight written characters (symbols), and then reads that line the way you might read a sentence.

This guide explains what saju is, where the name comes from, and what a reading does and does not offer.

Saju in brief

Saju (say it "sah-joo") is a traditional East Asian way of describing a person from four moments of time: the year, the month, the day and the hour of birth. Each moment is written as a pair of characters, so a full chart has eight. That is why Koreans often say saju palja (sah-joo pahl-jah), "four pillars, eight characters."

You may also see it called "Korean astrology," though saju uses the calendar, not the stars. The Chinese tradition BaZi shares the same roots. We use "saju" because that is what Korean readers call it.

Why "pillars"?

The Encyclopedia of Korean Culture (Academy of Korean Studies) explains the name with a picture. Imagine a person as a house. The year, month, day and hour of birth are the four pillars that hold the house up. Each pillar is a pair of characters, one on top and one below. Four pillars with two characters each give eight.

The picture shows how a reading works. A pillar is not a verdict. It is one post in a structure, and the structure is read as a whole.

What the characters are

The top character of each pillar is a heavenly stem, and there are ten of them. The bottom character is an earthly branch, and there are twelve. They are two sets of labels, like the letters and numbers on a map grid. The Four Pillars lists all of them.

Every stem and branch carries a yin or yang label and one of five elements: Wood, Fire, Earth, Metal or Water. Yang is the outgoing side and yin is the inward side. Branches also stand for the twelve animals of the Chinese zodiac. Your animal is the branch of your saju birth year. Because saju changes year at Ipchun (the start of spring, around February 4), not Lunar New Year, early-year births may differ from the animal you know.

Where sixty comes from

Pair the first stem with the first branch, the second with the second, and keep going. When the stems run out after ten, start them again while the branches continue. The cycle begins with Gap-Ja and ends with the sixtieth pair, Gye-Hae. Then it starts over.

Because yang stems pair only with yang branches and yin with yin, the count is sixty, not 120. The same cycle names years, months and days. Sixty years later, the same year pair returns.

This is the calendar underneath saju, and the same one behind the zodiac animals.

A short history, with the uncertain parts left out

Here is what we can say with confidence.

  • The stem-and-branch count is very old. The encyclopedia notes that Shang-dynasty oracle bone writing contains a table of the pairs, which suggests the system was in real use by then.
  • Stem-and-branch dating was already in use in Korea by about the time Silla unified the Three Kingdoms, according to the Encyclopedia of Korean Culture. Exactly when it first arrived is less clear.
  • The reading of birth charts developed in China over many centuries. Korean scholarship points to Li Xuzhong (Yi Heojung in Korean), a Tang-dynasty figure, and to Xu Ziping and Xu Sheng of the Song dynasty as important in turning older fate-reading methods into the saju tradition we know. Historians still debate details, including whether Xu Ziping lived in the Song period at all.

Saju is a living tradition with a long and untidy past, and anyone who gives you a neat origin story with exact dates is simplifying.

How a chart is built

Saju follows the sun's calendar. The year changes at Ipchun, and each month changes at a solar term (one of 24 markers along the sun's yearly path) rather than on the 1st. A person born on January 3 is still in the saju month that began in early December (the Ja month). The day pillar comes from a continuous day count, and the hour pillar is one of twelve two-hour blocks. The full rules, with tables, are in The Four Pillars.

The one character that gets extra attention

Of the eight characters, readers give special weight to one: the stem of the day pillar. We call it your Day Master. The encyclopedia describes the whole chart as read around it, with the other characters showing how it is supported, challenged or balanced.

We describe the ten Day Masters with ten images: Oak, Ivy, Sunshine, Firefly, Rock, Meadow, Blade, Gem, Ocean and Rain. These names are our own English images, not traditional terms. You can find yours with the free Saju calculator.

What a reading looks at

Traditional readers describe a chart in terms of balance. Do the elements appear in even amounts, or does one dominate? Readers also look at personality and aptitudes, at the people around you, and at timing. Saju divides life into ten-year stretches, each with its own theme.

So the tradition is less about "who you are forever" and more about what mix you were born into and what this chapter may be asking of you.

What saju is not

Saju is not a science. You cannot test it the way you test a medicine, and two skilled readers can read the same chart differently. Traditionally it has been used to foretell good and bad fortune, but we take a lighter approach. We treat a reading as a mirror, not a verdict. It is for entertainment and reflection. It is not medical, legal, financial or psychological advice.

A fair way to use it: notice what fits, let the rest go, and keep making your own choices.

Where to go next

  1. Find your type: enter your birthday in the free Saju calculator.
  2. Meet your Day Master: Oak, Ivy, Sunshine, Firefly, Rock, Meadow, Blade, Gem, Ocean or Rain.
  3. Learn the structure: The Four Pillars, then the Saju Basics page.
  4. See a full chart explained on the Saju Reading page, and read the rules we use on How We Calculate.

For entertainment purposes only. Not medical, legal, financial or psychological advice. Read the full Disclaimer. Questions? Visit our Contact page.

Comments

Post a Comment

Popular posts from this blog

What Is a Day Master?

What Is a Day Master? A saju chart has eight characters, but a reading starts from one of them. It is the top character of the day pillar, and we call it your Day Master . This guide explains what that character is, how the ten possibilities line up, and where to read about each one. If the words "pillar" and "stem" are new, start with What Is Saju? and The Four Pillars . The character a reading starts from The stem is the top character of a pillar, and the stem of the day pillar is the Day Master. In Korean it is called the day stem ( ilgan ). "Day Master" is simply the English name we use for it. The Encyclopedia of Korean Culture (Academy of Korean Studies) describes the whole chart as read around this character. A reader looks at how the characters combine or clash, at the roles of family and other close people, at the balance of yin and yang, and at how the five elements feed or check one another. The Day Master is the reference point for all of it. ...
Read more

How to Use Our Free Saju Calculator: Step-by-Step Guide

Getting a Saju reading used to mean booking time with a professional reader. Now it takes about a minute, for free. Here's exactly how to use it and what each part of your result means. Step 1: Get your exact birth information ready Birth date (year, month, day) Birth time — as exact as possible. Saju is calculated down to the two-hour block you were born in, so "sometime in the morning" isn't precise enough. Check your birth certificate or ask a parent if you're not sure. Birth location (some calculators use this to adjust for time zone/solar time) Step 2: Enter your details into the calculator Go to the Saju calculator and fill in the birth date, time, and (if asked) location fields, then submit. Step 3: Read your Four Pillars chart Your result will show four pillars — Year, Month, Day, and Hour — each with a Heavenly Stem and an Earthly Branch. Here's the quick way to read it: Day Pillar — this is considered the core of who you are. Its ste...
Read more

What Do the Five Elements Say About Your Personality?

Run your birth details through a Saju calculator and you'll get a chart dominated by one or two of five elements: Wood, Fire, Earth, Metal, or Water. Here's what each one traditionally says about personality — and what it's like when you have too much, or too little, of it. Wood — the grower Wood-dominant charts are traditionally read as ambitious, idealistic, and growth-oriented — people who are always building toward something, planning the next step, pushing to expand. Too much Wood can tip into stubbornness or an inability to sit still. Too little can show up as a lack of direction or drive. Fire — the performer Fire brings passion, charisma, and high energy. Fire-dominant people are often the ones who light up a room and act fast on instinct. In excess, it's read as a short temper or impulsiveness. In deficiency, it can look like low motivation or emotional flatness. Earth — the stabilizer Earth is grounding, dependable, patient. Earth-dominant charts are tra...
Read more