Day pillars

Gui Mao 癸卯

Black Rabbit · Tender sprouts soaked by spring rain

Stage · BirthSeated · OutputKorean · gyemyo ilju
StructureWater Day Master × the Rabbit (Wood)

Yin Water — morning dew. You are seated on the energy you produce, so your force flows outward rather than pooling.

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 GodOutput

The rice bowl is seated in your inner room. Appetite, ease of expression and an unhurried optimism are laid under this seat.

Hidden stems Jia · Expression · 10d Yi · Output · 20d

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

Sprouts soaked by spring rain — clear feeling and quick growth. This constitution absorbs the surrounding water, meaning environment and company, exactly as it comes, so what you keep beside you is half the story.

Is Gui Mao 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 Gui Mao day pillar?

Your day pillar is the stem-branch pair governing the day you were born — Gui Mao (癸卯) 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 Gui Mao day pillar like?

Black Rabbit — the image traditionally attached to it is "Tender sprouts soaked by spring rain". Your Day Master 癸 (Yin Water — morning dew) sits on 卯, the Rabbit, which carries Wood. In the twelve-stage cycle that position reads as Birth, and the seated Ten God is Output.

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. 癸卯 is romanised Gui Mao from Mandarin and gyemyo 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 Rabbit ()

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.