Luck Pillars in Saju: How Your 10-Year Cycles Work

Why does one decade of your life feel like a different climate from the last? Saju answers with luck pillars, daeun (대운, 大運) in Korean: ten-year pillars of two characters that your chart passes through one after another. In Korea you will hear "my daeun has come in" said as if it meant a lottery win. It doesn't. A luck pillar is simply the next season, good or bad, and it changes on schedule. If your natal chart is the vessel you were born with, the luck pillars are the weather it sails through.

Where luck pillars come from

Luck pillars grow out of your Month Pillar, the two characters of the solar month you were born in. From there they step through the cycle of sixty stem-and-branch pairs, one step per decade. If your Month Pillar is 乙丑 Yi Chou, the next pillar forward is 丙寅 Bing Yin and the next backward is 甲子 Jia Zi. Each lasts ten years, so a chart usually lists eight, covering about eighty years.

The idea is that life continues the season you were born into. A winter birth moving forward walks into spring; moving backward, it walks into autumn. The natal chart never changes, but the climate around it does.

Forward or backward

Direction depends on the polarity of your Year Stem and on your sex. The traditional rule:

Year Stem	Men	Women
Yang: Jia, Bing, Wu, Geng, Ren	Forward (sunhaeng, 순행, 順行)	Backward (yeokhaeng, 역행, 逆行)
Yin: Yi, Ding, Ji, Xin, Gui	Backward	Forward

Two details trip people up. The Year Stem is the one in your chart, which changes at Ipchun (입춘, 立春) around 4 February, not on 1 January or at Lunar New Year, so a January birthday usually carries the previous year's stem (see why the saju year starts at Ipchun). And because the rule is written in terms of sex, twins of different sexes can share all eight characters yet travel in opposite directions. The classical rule is binary, and there is no settled convention for people it doesn't describe.

When your first luck pillar starts

The first luck pillar doesn't begin at birth. Its starting age, the daeunsu (대운수, 大運數), comes from a neat piece of arithmetic.

1. If you count forward, measure the time from your birth to the next jeol (절, 節), one of the twelve solar terms that open each saju month. If you count backward, measure back to the previous jeol.
2. Divide the number of days by three. Three days equal one year.
3. Round to the nearest whole year. Sajucheop keeps the result between 1 and 10.

Why three days? A solar month of about thirty days stands for one ten-year luck pillar, so three days stand for a year. The classical conversion goes finer, with one day worth four months, but everyday Korean charts print the rounded number. Born nine days before the next term and counting forward? Your first luck pillar starts at 3, the next ones at 13, 23, 33 and so on.

One convention matters when you match a pillar to a calendar year. Korean charts may label these ages in the traditional Korean count, in which a baby is one at birth and everyone gains a year on New Year's Day. Sajucheop's Korean chart does: a pillar marked 44 starts in the calendar year you turn 43. Other charts may use international age, so check which count a chart uses.

A worked example: twins, two directions

Take a chart born in Seoul on 23 January 1984 at 4:40 p.m.: year 癸亥 Gui Hai, month 乙丑 Yi Chou, day 丙辰 Bing Chen, hour 丙申 Bing Shen. The Day Master is Bing, the Midday Sun, born in deep winter, and it is a weak chart with Water pressing on the Fire; our Ten Gods guide reads it in detail. The Year Stem, Gui, is yin.

Our engine places the birth 17.2 days after the previous jeol, Sohan ("Minor Cold", 6 January), and 12.3 days before the next, Ipchun (just after midnight on 5 February, Korea time). A girl counts forward: 12.3 ÷ 3 ≈ 4.1, so her first luck pillar starts at 4. A twin brother born in the same hour counts backward: 17.2 ÷ 3 ≈ 5.7, so his starts at 6.

Her ages	Her pillar	Ten Gods (stem / branch)	His ages	His pillar	Ten Gods (stem / branch)
4–13	丙寅	Friend / Indirect Resource	6–15	甲子	Indirect Resource / Direct Officer
14–23	丁卯	Rob Wealth / Direct Resource	16–25	癸亥	Direct Officer / Seven Killings
24–33	戊辰	Eating God / Eating God	26–35	壬戌	Seven Killings / Eating God
34–43	己巳	Hurting Officer / Friend	36–45	辛酉	Direct Wealth / Direct Wealth
44–53	庚午	Indirect Wealth / Rob Wealth	46–55	庚申	Indirect Wealth / Indirect Wealth
54–63	辛未	Direct Wealth / Hurting Officer	56–65	己未	Hurting Officer / Hurting Officer

Same chart, two lives. Her decades walk out of winter through the Tiger, Rabbit and Dragon of spring into the Snake, Horse and Goat of summer. For a cold, weak Sun, the Wood and Fire of her first two pillars are fuel and warmth, and the Snake, Horse and Goat bring summer heat. His decades walk back through the Rat and the Pig into the Dog, Rooster and Monkey of autumn, with Water and Metal in the lead. By the balancing logic, his middle decades ask more of a weak Day Master: Wealth decades that bring opportunity along with a heavier load. That is not a verdict. It is a reason, in his thirties and forties, to build support (skills, allies, credentials) before expanding.

How to read a luck pillar against your chart

1. Name its Ten Gods. The stem and the branch's main qi set the decade's theme. Resource decades favor study and credentials, Output decades making and showing, Wealth decades money and a wider field, Authority decades responsibility and rank, Peer decades independence and competition.
2. Check the branch against your natal branches. A six-harmony such as 辰 with 酉 lets a decade blend in; a clash such as 子 against 午 or 辰 against 戌 brings moves and change, especially when it hits your Day Branch or Month Branch.
3. Weigh it against strength. A strong Day Master usually does well in Output, Wealth and Authority decades, a weak one in Resource and Peer decades. That is the logic behind the luck graph on Sajucheop's Korean chart, and our useful god guide refines it.
4. Give the branch its due. A common teaching holds that a luck pillar's branch outweighs its stem, because branches carry the seasons, and Sajucheop's luck graph weights it that way. Splitting a decade into a stem half and a branch half is a popular rule of thumb, not a law, so read the two together.

Korean readers also watch the handover years, gyoungi (교운기, 交運期), and expect some turbulence around them, the way weather is unsettled between seasons.

Years and months inside the decade

Luck pillars set the season; faster layers set the weather. The yearly pillar, seun (세운, 歲運), changes at Ipchun. The monthly pillar, wolun (월운, 月運), changes at each jeol rather than on the first of the month, and the daily pillar, iljin (일진, 日辰), changes at midnight. Read them in the same order: the stem's Ten God gives the theme, the branch shows where it lands, and harmony or clash with your Day Branch tells you how smoothly. The luck pillar is the stage; the year is what happens on it.

Day Master	2026 丙午 (stem / branch)	2027 丁未 (stem / branch)
Jia	Eating God / Hurting Officer	Hurting Officer / Direct Wealth
Yi	Hurting Officer / Eating God	Eating God / Indirect Wealth
Bing	Friend / Rob Wealth	Rob Wealth / Hurting Officer
Ding	Rob Wealth / Friend	Friend / Eating God
Wu	Indirect Resource / Direct Resource	Direct Resource / Rob Wealth
Ji	Direct Resource / Indirect Resource	Indirect Resource / Friend
Geng	Seven Killings / Direct Officer	Direct Officer / Direct Resource
Xin	Direct Officer / Seven Killings	Seven Killings / Indirect Resource
Ren	Indirect Wealth / Direct Wealth	Direct Wealth / Direct Officer
Gui	Direct Wealth / Indirect Wealth	Indirect Wealth / Seven Killings

The Ding Wei year begins at Ipchun, on the morning of 4 February 2027, Korea time. For our example woman, 2026 is a Peers year that props up her Fire. The month that opened at Baengno ("White Dew", 7 September 2026) is 丁酉 Ding You, whose Rooster forms a six-harmony with her Dragon Day Branch. The next, 戊戌 Wu Xu from Hallo ("Cold Dew", 8 October), brings the Dog, which clashes with that Dragon: a month for double-checking commitments, not for fear. And by the Korean count, her fifth luck pillar, 庚午, opens in 2027.

The English calculator doesn't list luck pillars, but it gives you the two facts this method starts from: your Year Stem and your Month Pillar. Cast your chart on the calculator, choose your direction from the table above, and count the days to the right jeol (each falls early in the month, usually between the 4th and the 8th). For the faster layers, the daily reading tracks each day's pillar against your chart, and the 2027 Fire Goat forecast lists every month of the coming year.

Keep reading

• The Ten Gods in Saju (BaZi): A Plain-English GuideWhat the Ten Gods mean in Korean saju: how every character relates to your Day Master, the five pairs, a keyword table and a worked example chart.
• Hidden Stems in Saju: What Each Branch Holds InsideHidden stems (jijanggan) explained: why each earthly branch holds one to three stems, the table for all 12 branches, and how they change your chart.
• Strong or Weak Day Master? How Saju Measures StrengthWhat a strong or weak Day Master means in Korean saju: season, roots and support, a simple scoring walk-through, and what each tendency implies.
• Getting a Saju Reading in Seoul: A Visitor's GuideSaju café or traditional reader?

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