Your four pillars describe the chart you were born with. Luck Pillars (大運) describe the weather you travel through: a sequence of ten-year periods, each with its own stem and branch, that colour how your chart plays out at different stages of life.
Where Luck Pillars come from
Luck Pillars grow out of your month pillar — the season you were born in. Starting from it, they step through the sixty-pair cycle one pair at a time, either forward or backward. If your month pillar is Bing Yin, a forward sequence continues Ding Mao, Wu Chen, Ji Si…, and a backward one goes Yi Chou, Jia Zi, Gui Hai… Each pair rules about ten years. Fate Hall shows eight of them, covering roughly eighty years.
Because the month stem itself follows from the year stem, the whole sequence is fixed at birth. The traditional "Five Tigers" rule gives the stem of the first month (the Tiger month, which starts at the Beginning of Spring) for each year:
| Year stem | Tiger month (寅) pillar |
|---|---|
| 甲 Jia or 己 Ji | 丙寅 Bing Yin |
| 乙 Yi or 庚 Geng | 戊寅 Wu Yin |
| 丙 Bing or 辛 Xin | 庚寅 Geng Yin |
| 丁 Ding or 壬 Ren | 壬寅 Ren Yin |
| 戊 Wu or 癸 Gui | 甲寅 Jia Yin |
Forward or backward?
The direction depends on two things: whether your year stem is yang or yin, and your sex at birth. This is the one place in BaZi where sex at birth changes the calculation, which is why Fate Hall asks for it.
| Year stem | Male | Female |
|---|---|---|
| Yang (甲 丙 戊 庚 壬) | Forward | Backward |
| Yin (乙 丁 己 辛 癸) | Backward | Forward |
When the first Luck Pillar starts
The starting age comes from the solar calendar. Count the days from your birth to the next month-starting solar term (if your Luck Pillars run forward) or back to the previous one (if they run backward). Three days count as one year. A person born nine days before the next solar term, with a forward sequence, starts their first Luck Pillar at about three.
- Fate Hall calculates the exact moment of each solar term astronomically, checked to the minute against the Korea Astronomy and Space Science Institute table, and uses your birth time converted to Universal Time.
- The number of days divided by three is rounded to the nearest whole year, and kept between 1 and 10.
- Traditional texts count this starting age the East Asian way, in which you are 1 at birth. Fate Hall's English edition shows ordinary ages, one year lower, so a traditional starting number of 4 appears as "age 3".
Some schools refine the count to months and days (one day for every four months, and so on). Fate Hall keeps to whole years, which is how most readings present it.
Reading a Luck Pillar
- The stem plays one of the Ten Gods for your Day Master. A Wealth stem suggests a decade where money and practical projects come to the front; a Resource stem, learning and support; an Officer stem, responsibility and status.
- The branch sets the "season" of the decade. Classical readers give it more weight than the stem, especially in the second half of the ten years. Its life stage for your Day Master shows how much energy you have to work with.
- Interactions with your own pillars — harmonies and clashes — mark decades of cooperation or change.
- Balance is the big question: a Luck Pillar that brings the element your chart lacks is usually read as an easier decade than one that piles on what you already have too much of.
Within each decade, the individual years add their own stem and branch on top. Fate Hall's yearly and monthly readings combine the two layers.
Common questions
My sibling and I have the same parents but different directions. Why? Direction depends on your own year stem and sex at birth, so siblings born in different years or of different sexes can easily run in opposite directions.
Is a change of Luck Pillar a dangerous time? Folk tradition calls the handover year a "crossing" and advises care, but it is better understood as a transition: themes of the old decade wind down and new ones begin. Many people notice it as a change of focus rather than a crisis.
Related guides
- The Sixty Jiazi and NayinAll sixty stem-branch pairs from Jia Zi to Gui Hai, with their animal, Nayin element and years from 1924 to 2043, and how the cycle counts years, months, days and hours.
- The Ten GodsWhat the Ten Gods are, how each is found from your Day Master, what themes they stand for, and a full lookup table for all ten stems.
- True Solar TimeWhy BaZi uses the Sun's position instead of clock time: longitude correction, the equation of time and daylight saving, with tables for major cities and every month.