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Day Pillar 16 of 60 · Nayin City Wall Earth

Ji Mao (己卯) Day Pillar — Yin Earth on the Rabbit

The Ji Mao day pillar pairs the Ji day master (Yin Earth) with the Mao branch (Wood, the Rabbit). Below: the computed facts, what the seat relation and twelve-stage position mean structurally, the nayin gloss, the classical reading of the spouse palace, and an instant lookup for your own pillar.

Computed facts (engine-verified)

This page is generated from the engine, not hand-written; structural facts reconcile against the methodology page.

Day master己 Ji · Yin Earth
Day branch卯 Mao (Rabbit) · Wood
Hidden stems乙 Yi (Seven Killings, main qi)
Stage of the stem hereIllness (7 of 12)
NayinCity Wall Earth · 城头土 (shared with Wu Yin 戊寅)
Seat relationBranch controls stem (jie jiao) — traditional term: 截脚

How Ji sits on Mao

The branch controls the stem: Wood bears down on Earth, so the Ji day master sits under pressure from its own base. The traditional name is 截脚 (jié jiǎo, "cutting the heel") — the seat pushes back against the self. Structurally this means the day master cannot take its own ground for granted; it is a pillar where the base tests the person, and the full chart shows what resources answer that test.

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Nayin: City Wall Earth

City Wall Earth (城头土): earth compacted into a wall — ground given a defensive shape. The theme is structure that protects what is inside it.

The spouse palace (day branch)

In the spouse palace this is an Influence (官杀) configuration: the classical reading treats the partner-side branch as a source of structure, accountability, or pressure on the Ji day master. The structural point — stated by the tradition, not by this site — is that intimacy here comes with terms attached. Whether those terms read as support or as strain depends on the other seven characters, which is why this page stops at structure.

The main qi 乙 (Yi, Seven Killings) defines the palace's classical group: Influence.

A note on what this page deliberately does not do: the internet is full of "60 personality types" tables that assign a fixed character to each day pillar. This site rejects that framing. A day pillar is a structural position — who sits where, on what kind of ground, with which hidden tenants. The same pillar reads differently under a different month command, and no meaningful judgement exists without the other six characters. Where the tradition offers a reading, it is labelled as the tradition's; this site's own contribution is that every number and term on this page is computed, versioned, and checkable against the methodology page.

Find your own day pillar

Birth date alone is enough — the day pillar never needs a birth time. The calculation runs in your browser; nothing is sent anywhere.

Frequently asked

What is the Ji Mao (己卯) day pillar?
The Ji Mao day pillar pairs the Ji stem (Yin Earth) with the Mao branch (Wood). Its computed facts: hidden stems Yi (Seven Killings), the Ji stem at the Illness stage on this branch, seat relation "undefined", and nayin City Wall Earth (城头土).
How do I find my own day pillar?
Use the calculator on this page (birth date is enough — the day pillar does not need a birth time) or the full chart calculator. Your day pillar is the third pillar of the four; each of the sixty has its own page on this site with the same computed structure.
Is the Ji Mao day pillar good or bad?
Neither, on its own. The seat relation (undefined) and the Illness stage describe position and flow, not fortune. A meaningful reading needs the month command and the other six characters — any source that grades pillars as lucky or unlucky is simplifying past what the system itself claims.
What does the nayin City Wall Earth mean?
Nayin (城头土) is a two-thousand-year-old classification that gives each PAIR of pillars a symbolic element-image — for Ji Mao it is "City Wall Earth", shared with its partner pillar Wu Yin (戊寅). It is a classical gloss layer, published here alongside the structural facts, never instead of them.

Nearby pillars

The other five pillars sharing this day master (Ji):

Ji Si · Ji Chou · Ji Hai · Ji You · Ji Wei

Wu Yin ←  ·  → Geng Chen

Reference index

Every enumerable component of ba zi has its own page here. Each page is computed by the same engine and can be checked item by item — none of it is a personality table.