Day pillars

Ding You 丁酉

Red Rooster · A candle lighting an autumn night

Stage · BirthSeated · Indirect WealthKorean · jeongyu ilju
StructureFire Day Master × the Rooster (Metal)

Yin Fire — warm candlelight. You are seated on the metal energy you control — a sense of the practical world lies underfoot.

Twelve-stageBirth

Newly born energy. It learns fast and grows easily, and it tends to receive care from the people around it without having to ask.

Seated Ten GodIndirect Wealth

Money in motion is seated in your inner room. Resourcefulness, scale and activity are strong here — and so is the width of what comes and goes.

Hidden stems Geng · Direct Wealth · 10d Xin · Indirect Wealth · 20d

The stems concealed inside (Rooster). A branch is not one single energy — it holds this mixture, in these proportions across a 30-day month.

A candle on an autumn night — it grows brighter the more narrowly it focuses. Digging deep is the talent, and a drafty seat, meaning a scattered environment, shakes it sharply.

Is Ding You actually your day pillar?

The day pillar shifts on solar-term and zi-hour boundaries, so it is not countable by eye. Enter your birth date and the engine computes it in under a minute — free, no account.

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Frequently asked

How do I know if I have the Ding You day pillar?

Your day pillar is the stem-branch pair governing the day you were born — Ding You (丁酉) in this case. It rotates every day through a cycle of sixty, and the boundaries depend on solar terms and the 11pm zi-hour rule, so it is not something you can count by eye. Enter your birth date in our free reading and the engine computes it directly.

What is the Ding You day pillar like?

Red Rooster — the image traditionally attached to it is "A candle lighting an autumn night". Your Day Master 丁 (Yin Fire — warm candlelight) sits on 酉, the Rooster, which carries Metal. In the twelve-stage cycle that position reads as Birth, and the seated Ten God is Indirect Wealth.

Does my day pillar tell me my whole chart?

No. The day pillar is two characters out of eight — your core axis, not the whole picture. The year, month and hour pillars, the balance of the five elements, and your decade luck all have to be laid on top before a reading means much. Treat a day-pillar page as the doorway, not the room.

Why is it called Jia Zi in Chinese and something else in Korean?

Same sixty-cycle, different reading of the same characters. 丁酉 is romanised Ding You from Mandarin and jeongyu from Korean, and Korean saju calls the day pillar ilju (일주). The calculation is identical; the interpretive traditions differ.

Other pillars with the same Day Master ()

Other pillars seated on the Rooster ()

See all 60 day pillars ›

The twelve-stage position, seated Ten God and hidden stems are computed by the Ioreum deterministic engine (ruleset ioreum-2026.07). The reading itself is interpretation from the day-pillar tradition, not verified science — we always tell you which part is calculation and which part is tradition.