Twelve Questions First-Time Readers Ask About Saju
New to Korean saju? Answers to the twelve questions people ask most often, from what the chart is made of to birth times, compatibility, luck cycles and how seriously to take it all.
Most people meet saju sideways. A friend mentions their element, a relative brings up the zodiac before a wedding, or a chart turns up online full of unfamiliar characters. The same handful of questions tends to follow. Below are twelve of them, grouped by theme, with short and plain answers.
The basics
What exactly is saju?
Saju (四柱) means four pillars. It is the Korean name for a tradition of reading a person's character and timing from the year, month, day and hour of birth. Each of those four moments is written as a pair of characters, a heavenly stem on top and an earthly branch below, which gives eight characters in all. Koreans often call the whole chart sajupalja, the four pillars and eight characters.
Is saju the same as Chinese BaZi?
They share the same calculation. BaZi is the Chinese name for the eight characters, and the charts are built the same way. What differs is language, emphasis and the customs around readings. Korean practice, for example, puts a lot of weight on gunghap, the reading of compatibility between two people, and on the yearly reading many people check around the new year.
Birth details
Do I need to know my birth time?
It helps but is not required. The birth time sets the hour pillar, which adds two characters and fills out the five-element balance. Without it, a reader works from six characters. The day pillar, which carries the most weight in many readings, comes from the date rather than the hour, so a great deal can still be said. (The one exception is a birth in the last hour before midnight, where conventions differ on which day it belongs to.) If you have a rough idea, such as early morning or late evening, a reader may compare the two or three possible hour pillars and note what changes between them.
Why does my zodiac animal not match my birth year?
The saju year starts at Ipchun in early February, not on January 1, so a birthday before that point keeps the previous year's animal. Outside saju, many families switch animals at the Lunar New Year instead, which is why two sources can disagree about a January or early-February birthday.
Inside the chart
What is the day master?
The day master, or ilgan, is the upper character of the day pillar. It represents you, and almost every other part of the chart is read in relation to it. There are ten possible day masters, two for each of the five elements, one yin and one yang.
What do the five elements mean here?
Wood, Fire, Earth, Metal and Water are five kinds of energy rather than five substances. Each character in the chart belongs to one of them. Readers look at how many of each appear and how they feed or check one another. A chart heavy in one element and light in another is read as having a particular texture, not a defect. A missing element is likewise treated as a feature to understand, and many readers look at whether the ten-year cycles bring it in later.
Relationships and timing
Can saju say whether two people are compatible?
Gunghap compares two charts, usually starting with the two day masters and the two day branches. It describes how two rhythms meet: where they are easy together and where they might rub. Readers today frame it as material for conversation. It is not a test that a couple passes or fails. The same comparison can describe friends, siblings or coworkers, with the language shifted from romance to everyday cooperation.
What are the ten-year and yearly cycles?
Beyond the birth chart, saju lays out daeun, ten-year luck periods that each bring a new pair of characters, and seun, the character pair that belongs to each year. Readers compare these with the birth chart to describe the themes of a period. They are read as changes in emphasis, the way seasons change, rather than as fixed events.
Using a reading well
Why do different calculators show different charts?
Most differences come from birth time and boundaries. A birth near midnight, near the start of a solar month, or near Ipchun can land on either side of a line. Time zones and daylight saving add more room for disagreement, and readers also use different conventions for the hour around midnight. Knowing which convention each tool uses explains most mismatches; double-checking the birth details helps only when one of them was entered wrongly.
FAQ
Is saju fortune telling?
It has long been used to read fortune and timing, and some people still use it to predict. Many modern readers and casual users treat it as a reflective tradition: a vocabulary for talking about personality and phases of life. No reading can tell you what will happen, and a careful reader will not claim to.
What is dohwa, or a sal, that I keep hearing about?
Sal, or sinsal, are named patterns: specific branch or stem combinations that older books flagged as warnings and that modern readers mostly treat as hints about temperament. Dohwa, the peach blossom, is the best known, and today it is read as charm and visibility.
How seriously should I take my reading?
Lightly. A reading can be a useful mirror, giving words to tendencies you already sense and prompting a good conversation. Choices about health, money, work and relationships deserve real information and people you trust, and a chart is no substitute for either.
If you want to try one in that spirit, Hongsil is free and asks for no account: a name or nickname, a solar or lunar birth date, a birth time if you have one, and your sex. Besides the overall reading there are separate ones for love and compatibility, money, career, wellbeing and the new year.
Related
- Your Day Master: The Ten Heavenly Stems in Saju
- Unknown Birth Time, Time Zones, and Why Saju Calculators Disagree
- Gunghap: How Koreans Read Compatibility in Saju
Part of the dotorium saju guide. Saju readings are for fun and reflection, not for making decisions.