White Monkey · Solid iron of the rocky mountain
Yang Metal — a forged sword. Your day branch carries the same metal energy as your Day Master — you are seated on your own root.
Earning its own keep. Self-reliance and practical competence sit firmly in this seat.
Your own energy is seated in your inner room. Backbone is solid and you stand well alone — and you meet the people closest to you as equals, which can mean bumping into them.
The stems concealed inside 申 (Monkey). A branch is not one single energy — it holds this mixture, in these proportions across a 30-day month.
Solid iron of the rocky mountain — decisive, unadorned, with its resolve clearly visible. Execution is fast and grudges are short; as iron against iron throws sparks, the question here is how it pairs with equal hardness.
Is Geng Shen actually your day pillar?
The day pillar shifts on solar-term and zi-hour boundaries, so it is not countable by eye. Enter your birth date and the engine computes it in under a minute — free, no account.
Find my day pillar — freeYour day pillar is the stem-branch pair governing the day you were born — Geng Shen (庚申) in this case. It rotates every day through a cycle of sixty, and the boundaries depend on solar terms and the 11pm zi-hour rule, so it is not something you can count by eye. Enter your birth date in our free reading and the engine computes it directly.
White Monkey — the image traditionally attached to it is "Solid iron of the rocky mountain". Your Day Master 庚 (Yang Metal — a forged sword) sits on 申, the Monkey, which carries Metal. In the twelve-stage cycle that position reads as Prime, and the seated Ten God is Companion.
No. The day pillar is two characters out of eight — your core axis, not the whole picture. The year, month and hour pillars, the balance of the five elements, and your decade luck all have to be laid on top before a reading means much. Treat a day-pillar page as the doorway, not the room.
Same sixty-cycle, different reading of the same characters. 庚申 is romanised Geng Shen from Mandarin and gyeongsin from Korean, and Korean saju calls the day pillar ilju (일주). The calculation is identical; the interpretive traditions differ.
The twelve-stage position, seated Ten God and hidden stems are computed by the Ioreum deterministic engine (ruleset ioreum-2026.07). The reading itself is interpretation from the day-pillar tradition, not verified science — we always tell you which part is calculation and which part is tradition.