Why Korean Saju reads your life one decade at a time
Want to know which Daeun you are in right now, and what the next one brings?
Get your full premium Saju reading — ₩9,900 One-time payment. A complete reading built from your personal Four Pillars chart, including your decade cycles.A Saju birth chart is fixed: the eight characters drawn from the year, month, day, and hour of your birth never change. What changes is time. Daeun, literally "Grand Luck," is the largest periodic shift in a reading. Roughly every ten years you enter a new Daeun, which adds one Heavenly Stem and one Earthly Branch on top of your base chart and brings new elemental energy that influences your environment and the opportunities around you. It is the long-running backdrop against which everything else is read.
The widely used metaphor is mechanical: if the eight characters of your chart describe the performance of the car you were born with, the Daeun describes the condition of the road that car is driving on. The same car handles a smooth highway and a gravel switchback very differently, and that is precisely why two decades of one life can feel so unlike each other.
The Daeun sequence is derived from your Month pillar, then run forward or backward depending on your sex and the polarity of your year, and anchored by a starting age of luck. That starting age is found by counting the days between your birth and the nearest solar term transition. From the starting age onward, each new pillar in the sequence governs a 10-year block. This is why one person's first Daeun might begin at age 3 and another's at age 8, and why a precise birth time and an accurate calendar conversion matter so much.
| Input | Role in the Daeun |
|---|---|
| Month pillar | The seed the 10-year sequence is generated from |
| Direction (forward / backward) | Decided by sex and the Yin/Yang polarity of the year |
| Starting age of luck | Days from birth to the nearest solar term, converted to a starting age |
| Incoming element each decade | Whether that decade supports or strains your Day Master |
A Daeun is judged by how its incoming element interacts with your base chart. A favorable Daeun — one where the new element strengthens your Day Master appropriately or supplies the balancing energy your chart was missing — can lift an entire decade, amplifying opportunities and softening difficulties. A challenging Daeun — one where the incoming element clashes with core pillars or pushes an existing imbalance further — does not guarantee hardship; it suggests that growth in that period tends to arrive through more demanding circumstances. Daeun sets the decade's theme; the yearly cycle, called Sewun, is the annual weather layered on top of it.
Daeun (Korean for Grand Luck) is the 10-year luck cycle in Korean Saju. It is a major energy period that overlays new elemental influence onto your fixed birth chart every decade, shifting which parts of your life are emphasized. Your birth chart is the car you were born with; the Daeun is the road that car is currently driving on.
Daeun is calculated from the Month pillar, together with the forward or backward direction of the cycle and your starting age of luck. The starting age comes from counting the days between your birth and the nearest solar term transition. From that starting age, each new pillar governs a 10-year block.
No. A challenging Daeun, where the incoming element clashes with core pillars or worsens an imbalance, does not guarantee hardship. It suggests that growth during that decade may come through more demanding circumstances. A favorable Daeun that supplies the balancing energy your chart needs can amplify opportunities and soften difficulties.
Daeun is the 10-year backdrop, the long-running condition of the road. Yearly fortune (Sewun) is the annual weather on top of it. Readers usually weigh the Daeun first to set the decade's theme, then layer the yearly cycle to see how a given year interacts with that backdrop.
Shen-Shu, "What Is the 10-Year Luck Cycle in BaZi?" · Sajugazer, "Saju Decade Analysis (Dae-un) — 10-Year Life Cycle Reading" · Sajumuse, "Wealth Luck Cycles in Saju: When Your Money Peak Hits" · AskRealKorea, "Saju Explained: Why Korea's MZ Generation is Obsessed with the Four Pillars of Destiny."