Daeun (大運)
— The Big Rhythm That Changes Every 10 Years
Daeun is a backdrop that changes every 10 years. The starting age differs from person to person — it's set by the distance between your birthday and the nearest solar term. Rather than good or bad Daeun, we look at what this period favors.
In this article 7 topics
Daeun is the backdrop of the stage
Saju has several layers of time: the iljin, the rhythm of a single day; annual luck (seun), the rhythm of a year; and Daeun, the rhythm of a decade.
| Layer | Cycle | In a metaphor |
|---|---|---|
| Birth chart | Lifetime | The role you play |
| Daeun | 10 years | The backdrop of the stage |
| Annual luck | 1 year | The mood of this act |
| Iljin | One day | Today's weather |
Even in the same role, what you do changes depending on whether the backdrop is a desert or a city. Daeun is that backdrop. It's closer to the place you stand changing, not you changing.
Why the starting age differs from person to person
Everyone's Daeun runs in 10-year cycles, but the age it starts differs. Some people start at three, others at nine.
This is set by the distance between your birthday and the nearest solar term. In Saju, months are divided by solar terms (see the Ipchun story), and the calculation measures how far your birthday is from a solar term.
Roughly 3 days equal 1 year. If the solar term was 9 days away, your Daeun starts at age 3; if it was 24 days away, at age 8. So the timing of each change differs from person to person, and you can't calculate it by other people's ages.
One more thing — whether your Daeun runs forward or backward also varies. Depending on the combination of the yin or yang of your birth year and your sex, the stem-branch pairs advance forward or run in reverse. So even people born on the same day may have Daeun moving in opposite directions if their sex differs.
What changes when the Daeun shifts
“The Daeun is changing” may sound like your life is about to turn upside down, but in reality it's closer to the backdrop gradually changing. It is commonly said to show up like this.
- Your interests shift. Something you were absorbed in for years loses its pull, and something else catches your eye.
- The people around you change. You drift from people you used to see often, and a new circle forms.
- What works changes. Methods that used to work stop working, and approaches you never tried suddenly do.
- Your home or work moves. Changes of place itself — moving house, changing jobs, going on to further study — may cluster together.
That said, the 1–2 years around a changeover overlap. It doesn't flip like a switch on your birthday; there's a period where the tail end of the old Daeun mixes with the start of the new one. The stretch when you feel “things are a bit in-between lately” is usually here.
Is there good Daeun and bad Daeun?
This is the most common question, and the answer is the same as for the Ten Gods: it's a difference in character, not rank.
When a Wealth-star Daeun arrives, your range of activity widens and opportunities grow — but so does what you have to manage. A Resource-star Daeun is good for filling up and learning, but the drive to reach outward weakens. It's not that one is better; it's that what you should put your energy into right now is different.
To use it practically, it's better to ask — “Is my current Daeun a time to expand, or a time to consolidate?” Hunker down in an expansion period and you miss opportunities; overextend in a consolidation period and you wear yourself out.
What to watch out for when reading Daeun
- Don't sum up 10 years in one word. Labels like “a decade of wealth luck” hide the ups and downs within it. In reality it rises and falls as it overlaps with annual luck (that year).
- Don't fold up 10 years because it's a “bad” Daeun. A large part of your life would disappear. The answer is to change your approach, not to stop.
- Don't judge by Daeun alone. The same Daeun works completely differently depending on the structure of the birth chart.
Mutal Unnie doesn't use definitive predictions or frightening language about Daeun — things like “something terrible will happen in this period.” Instead, it explains what tone this period has and what is worth putting your energy into.
How to see your own Daeun
Daeun can be calculated even if you don't know your birth time. Because it starts from the month pillar, a Three Pillars reading is enough to show the big rhythm.
Mutal Unnie's ‘10-year rhythm map’ shows at a glance which Daeun you're in and where, when the next change comes, and the tone of each period. Layer this year's and next year's reports on top and you can read the big rhythm together with the tone of the year.
Where are you in your Daeun right now?
Check your next changeover too with the 10-year rhythm map.
Get the app for iPhone & AndroidFAQ
How often does the Daeun change?
Every 10 years. But the starting age differs from person to person, so the timing of each change varies too. It doesn't change at the same age as everyone else.
How is the Daeun starting age determined?
It's calculated from the distance between your birthday and the nearest solar term. Roughly 3 days equal 1 year, so if the solar term was 9 days away, your cycle starts at age 3. Whether it runs forward or backward depends on your sex and the yin or yang of your birth year.
Can you feel the Daeun changing?
It often shows up gradually over 1–2 years around the changeover — your interests shift, or approaches that used to work stop working. It doesn't flip like a switch on a particular birthday.
If my Daeun is bad, should I be careful for 10 years?
No Daeun is better or worse than another; they just differ in character. Some periods favor expanding and others favor consolidating. Folding up a whole decade means giving up a large part of your life — the answer is to change your approach, not to stop.