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Day Pillar 4 of 60 · Nayin Furnace Fire

Ding Mao (丁卯) Day Pillar — Yin Fire on the Rabbit

The Ding Mao day pillar pairs the Ding day master (Yin Fire) 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丁 Ding · Yin Fire
Day branch卯 Mao (Rabbit) · Wood
Hidden stems乙 Yi (Indirect Resource, main qi)
Stage of the stem hereIllness (7 of 12)
NayinFurnace Fire · 炉中火 (shared with Bing Yin 丙寅)
Seat relationBranch generates stem (de di) — traditional term: 得地

How Ding sits on Mao

The branch generates the stem: Wood feeds Fire, so the Ding day master is seated on ground that keeps producing it. In traditional wording this is 得地 (dé dì, "gaining ground") — the self is resupplied by its own base. The practical consequence is structural, not predictive: whatever else the chart does, this day master starts from a position where its root is being actively replenished rather than taxed.

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Nayin: Furnace Fire

Furnace Fire (炉中火): fire contained in a forge — heat with a job to do. The image is transformation through sustained, bounded burning rather than open flame.

The spouse palace (day branch)

In the spouse palace this is a Resource (印) configuration: the classical reading treats this branch as a seat that Ding's partner-side Mao supplies and protects. The structural point — stated by the tradition, not by this site — is that closeness here tends to feel sustaining rather than demanding. Whether that is true of any actual marriage depends on the whole chart, which is precisely why this page makes no prediction.

The main qi 乙 (Yi, Indirect Resource) defines the palace's classical group: Resource.

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 Ding Mao (丁卯) day pillar?
The Ding Mao day pillar pairs the Ding stem (Yin Fire) with the Mao branch (Wood). Its computed facts: hidden stems Yi (Indirect Resource), the Ding stem at the Illness stage on this branch, seat relation "undefined", and nayin Furnace Fire (炉中火).
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 Ding 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 Furnace Fire mean?
Nayin (炉中火) is a two-thousand-year-old classification that gives each PAIR of pillars a symbolic element-image — for Ding Mao it is "Furnace Fire", shared with its partner pillar Bing Yin (丙寅). 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 (Ding):

Ding Chou · Ding Hai · Ding You · Ding Wei · Ding Si

Bing Yin ←  ·  → Wu 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.