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Day Pillar 51 of 60 · Nayin Great Stream Water

Jia Yin (甲寅) Day Pillar — Yang Wood on the Tiger

The Jia Yin day pillar pairs the Jia day master (Yang Wood) with the Yin branch (Wood, the Tiger). 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甲 Jia · Yang Wood
Day branch寅 Yin (Tiger) · Wood
Hidden stems甲 Jia (Peer, main qi); 丙 Bing (Eating God, middle qi); 戊 Wu (Indirect Wealth, residual)
Stage of the stem hereOfficial Post (4 of 12)
NayinGreat Stream Water · 大溪水 (shared with Yi Mao 乙卯)
Seat relationSame element (bi he) — traditional term: 比和

How Jia sits on Yin

Stem and branch share one element: Wood over Wood, so the Jia day master is seated on its own kind — a genuine root. The traditional name is 比和 (bǐ hé, "same kind"). Of all sixty pillars this arrangement gives the day master the most unambiguous footing: the base and the self speak the same element, for better or worse, and the rest of the chart decides which.

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Nayin: Great Stream Water

Great Stream Water (大溪水): great stream water — a valley river with real volume and a definite course.

The spouse palace (day branch)

In the spouse palace this is a Peers (比劫) configuration: the classical reading treats the partner-side branch as the same element as the Jia day master — a companion seat. The structural point — stated by the tradition, not by this site — is that closeness here tends to resemble friendship and side-by-side effort. Whether that sustains an actual marriage depends on the whole chart, which is precisely why this page makes no prediction.

The main qi 甲 (Jia, Peer) defines the palace's classical group: Self & Peers. Middle/residual tenants: Bing (Eating God), Wu (Indirect Wealth).

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 Yin (甲寅) day pillar?
The Jia Yin day pillar pairs the Jia stem (Yang Wood) with the Yin branch (Wood). Its computed facts: hidden stems Jia (Peer), Bing (Eating God), Wu (Indirect Wealth), the Jia stem at the Official Post stage on this branch, seat relation "undefined", and nayin Great Stream Water (大溪水).
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 Yin day pillar good or bad?
Neither, on its own. The seat relation (undefined) and the Official Post 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 Great Stream Water mean?
Nayin (大溪水) is a two-thousand-year-old classification that gives each PAIR of pillars a symbolic element-image — for Jia Yin it is "Great Stream Water", shared with its partner pillar Yi Mao (乙卯). 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 Zi · Jia Xu · Jia Shen · Jia Wu · Jia Chen

Gui Chou ←  ·  → Yi Mao

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.