11 luck pillars from age 1 · currently 丁亥 Bi Jian (peer) (age 21, 2017–2026, neutral) · Thai period Rahu (age 29–41)
Your saju chart moves in ten-year blocks (dae-un). Each block is a pillar with two elements and a name that says how it relates to you. That is your Yin Fire day master (丁), the small steady flame. A decade doesn't hand you events. It changes the weather you make your choices in. Some decades feed the flame. Some ask it to burn fuel it doesn't have.
Your first decade, from 1997 to 2006, was a Resource decade (Pian Yin, indirect resource) — Wood stem over a Metal branch, neutral in support. You were carried: people taught you, fed you, decided for you. The indirect kind means you picked it up sideways rather than straight.
Then from 2007 to 2016, a Companion decade of the rival kind (Jie Cai), Fire over Earth. That is the stretch where other people your age become the measuring stick. Comparison, sharing, someone always in the next seat. If your teens felt crowded, that's the reading, not your imagination.
Since 2017 you have been in another Companion decade, this one the peer kind (Bi Jian) — Fire stem, Water branch, running to 2026. The Fire above is one of the two elements your chart wants, so the top half of this decade genuinely warms you.
The Water underneath works against you, so the ground is cooler than the sky. In lived terms: your identity has been getting stronger and clearer, but the support under it has not been reliable.
This is a decade of standing on your own name, with friends and rivals wearing the same face. No adult in the room decides for you anymore.
What follows, from 2027 to 2036, is an Output decade of the rebel kind (Shang Guan), Earth over Water, and the data marks it draining. That is your stretch for making things and being seen making them — your opinion, your fingerprint on the work.
The rebel flavour means the output has an edge to it; it pushes against rules rather than fitting inside them. Both elements work against you, so this is the decade to protect your fuel on purpose. Rest is not laziness in a draining decade. It is maintenance.
The Output theme continues gentler from 2037 to 2046 (Shi Shen), still draining, still Earth-heavy. Wealth decades arrive later, from 2047, when Metal over Wood turns the focus to what you have built and what it costs to keep.
On the Thai timetable, you are inside the Rahu period (มหาทักษา, eight planetary periods over a life). It runs from age 29 to 41, about eleven years still to go. Then it hands over to Venus, which holds a long stretch to 62. These two timetables are not synchronised. Your next Thai turn is ten years after your next saju turn. They run at their own lengths, and neither is waiting for the other.
The next boundary is 2027. The Companion weather ends and the Output weather takes over: peers stop being the theme, and what you make with your own hands does.