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Day Pillar 1 of 60 · Nayin Gold in the Sea

Jia Zi (甲子) Day Pillar — Yang Wood on the Rat

The Jia Zi day pillar pairs the Jia day master (Yang Wood) with the Zi branch (Water, the Rat). 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 Jia · Yang Wood
Day branch Zi (Rat) · Water
Hidden stems Gui (Direct Resource, main qi)
Stage of the stem hereBathing (2 of 12)
NayinGold in the Sea · 海中金 (shared with Yi Chou 乙丑)
Seat relationBranch generates stem (de di) — traditional term: 得地

How Jia sits on Zi

The branch generates the stem: Water feeds Wood, so the Jia 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: Gold in the Sea

Gold in the Sea (海中金): metal submerged in ocean depths — strength that is real but hidden, and must be drawn up before it can be used. Classical commentary pairs it with patience under pressure: the value is there, the visibility is not.

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 Jia's partner-side Zi 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 (Gui, Direct 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 Jia Zi (甲子) day pillar?
The Jia Zi day pillar pairs the Jia stem (Yang Wood) with the Zi branch (Water). Its computed facts: hidden stems Gui (Direct Resource), the Jia stem at the Bathing stage on this branch, seat relation "undefined", and nayin Gold in the Sea (海中金).
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 Jia Zi day pillar good or bad?
Neither, on its own. The seat relation (undefined) and the Bathing 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 Gold in the Sea mean?
Nayin (海中金) is a two-thousand-year-old classification that gives each PAIR of pillars a symbolic element-image — for Jia Zi it is "Gold in the Sea", shared with its partner pillar Yi Chou (乙丑). 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 (Jia):

Jia Xu · Jia Shen · Jia Wu · Jia Chen · Jia Yin

Gui Hai ←  ·  → Yi Chou

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.