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Day Pillar 7 of 60 · Nayin Roadside Earth

Geng Wu (庚午) Day Pillar — Yang Metal on the Horse

The Geng Wu day pillar pairs the Geng day master (Yang Metal) with the Wu branch (Fire, the Horse). 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庚 Geng · Yang Metal
Day branch午 Wu (Horse) · Fire
Hidden stems丁 Ding (Direct Officer, main qi); 己 Ji (Direct Resource, middle qi)
Stage of the stem hereBathing (2 of 12)
NayinRoadside Earth · 路旁土 (shared with Xin Wei 辛未)
Seat relationBranch controls stem (jie jiao) — traditional term: 截脚

How Geng sits on Wu

The branch controls the stem: Fire bears down on Metal, so the Geng 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: Roadside Earth

Roadside Earth (路旁土): earth that carries a road — practical, load-bearing ground that serves traffic rather than scenery.

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 Geng 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 丁 (Ding, Direct Officer) defines the palace's classical group: Influence. Middle/residual tenants: Ji (Direct 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 Geng Wu (庚午) day pillar?
The Geng Wu day pillar pairs the Geng stem (Yang Metal) with the Wu branch (Fire). Its computed facts: hidden stems Ding (Direct Officer), Ji (Direct Resource), the Geng stem at the Bathing stage on this branch, seat relation "undefined", and nayin Roadside Earth (路旁土).
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 Geng Wu 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 Roadside Earth mean?
Nayin (路旁土) is a two-thousand-year-old classification that gives each PAIR of pillars a symbolic element-image — for Geng Wu it is "Roadside Earth", shared with its partner pillar Xin Wei (辛未). 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 (Geng):

Geng Chen · Geng Yin · Geng Zi · Geng Xu · Geng Shen

Ji Si ←  ·  → Xin Wei

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.