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. The other seven characters are read in relation to it.
A Day Master is not your whole chart
The Day Master is a starting point. Two people with the same Day Master can have charts that read quite differently, because the other seven characters differ. One Oak's chart may spread the five elements fairly evenly, while another Oak's leans heavily on a single element. The encyclopedia says saju values balance and harmony above all.
Why the day?
The year and month pillars turn on calendar markers, Ipchun and the solar terms. The day pillar does not. The encyclopedia notes that each day carries its own fixed pair, independent of the year and of the solar terms, and that readers take it straight from a perpetual calendar. The pair moves one step forward every day through the cycle of sixty.
That means your Day Master follows from your birth date alone, with one late-night wrinkle covered below.
The ten Day Masters
Ten stems make ten Day Masters. These are the same ten stems listed in The Four Pillars, each with its element and its yang or yin side.
| Stem | Element | Our image | The picture in a few words | Page |
|---|---|---|---|---|
| Gap | Yang Wood | Oak | the tall tree | Oak |
| Eul | Yin Wood | Ivy | the vine and wildflower | Ivy |
| Byeong | Yang Fire | Sunshine | the sun | Sunshine |
| Jeong | Yin Fire | Firefly | the small glowing light | Firefly |
| Mu | Yang Earth | Rock | the great mountain | Rock |
| Gi | Yin Earth | Meadow | the meadow where things take root | Meadow |
| Gyeong | Yang Metal | Blade | raw ore and the axe | Blade |
| Shin | Yin Metal | Gem | the jewel | Gem |
| Im | Yang Water | Ocean | the great river and sea | Ocean |
| Gye | Yin Water | Rain | the rain and dew | Rain |
The Shin in this table is the stem. It is a different character from the Shin branch, the Monkey.
Which parts are traditional, and which are ours
The stems, the five elements and the yin and yang labels come from the tradition. The images do not. Oak, Ivy, Sunshine, Firefly, Rock, Meadow, Blade, Gem, Ocean and Rain are our own English picture names, chosen to make ten abstract labels easier to remember. They are not traditional terms. The same goes for the six stars of Bond Circle, our own system inspired by the relationships between the elements.
When you meet a name like Yang Wood, you are in traditional territory. When you meet Oak, you are on our page.
A ten-day rhythm
Because the day pair advances one step a day, the Day Master advances one step a day as well. A Gap day is followed by an Eul day, then Byeong, and so on to Gye, and then the row starts again. In our terms, a person born the day after an Oak is an Ivy, and a person born the day after a Rain is an Oak. Every type returns once in every ten days.
That is a fact about the calendar. It says nothing about how many people share each type.
The one wrinkle is midnight. The Rat hour runs from 11 PM to 1 AM, and traditions differ on whether the 11 PM to midnight part already belongs to the next day. If you were born in that window, your Day Master may be the one for the next day or for the same day, depending on the method. The Four Pillars covers the Rat hour. Our calculator first adjusts your birth time to local sun time and then decides the day, so a birth close to midnight can land on a different type than you expect. The rules are on the How We Calculate page.
What a type page gives you
The ten type pages share one shape. Each opens with a short portrait, then looks at the element behind it, where that type tends to shine, when it may wobble, and how it shows up in love and friendship, at work and in your circle. Each page also shows which other types sit around it as Bond Circle stars.
They are written as reflections to try on, not predictions. Take what fits and leave the rest.
A lens, not a measurement
Saju is a lens, not a measurement. Two skilled readers can read the same chart differently, and nothing here can tell you what a day, a year or a person has in store. Use it for reflection and entertainment, and keep making your own choices.
Find yours
- Enter your birthday in the free Saju calculator.
- Open your page from the table above.
- Curious how the pillars are built? Read The Four Pillars.
- Looking ahead? See the 2027 Korean Saju Forecast for All Ten Types.
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For entertainment purposes only. Not medical, legal, financial or psychological advice. Read the full Disclaimer. Questions? Visit our Contact page.
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