丁巳

Ding Si (丁巳) — Yin Fire on the Snake

A flame that knows exactly what it is doing.

Heavenly stem: 丁 · Ding · Yin Fire
Earthly branch: 巳 · Si · Snake
Na Yin: Earth in the Sand
Hidden stems: Bing, Geng, Wu
Hidden gods: Rob Wealth, Direct Wealth, Hurting Officer
Branch element: Fire

Focused fire moving with intent through hot stone.

In BaZi, the day pillar is the pillar of the self. Its heavenly stem is your Day Master — the reference point for every other character in the chart. A person born on a Ding Si day has Ding fire as their Day Master, sitting on the 巳 (fire) branch.

Personality

Ding fire is precise; the Snake underneath adds strategy. You are insightful, persuasive and very hard to fool, and you prefer to win quietly rather than announce a victory. You read motives quickly, which makes you both a good ally and a slightly unnerving opponent.

Work and vocation

Consulting, finance, design, therapy, or law — settings where judgement is the product and information is never evenly distributed.

Relationships

Attentive and strategic, occasionally more tactical than the moment requires. Being direct is usually better than being clever.

Health and rhythm

Nervous heat, disturbed sleep and a throat that tightens when you are not saying what you think. Speak earlier and the symptom eases.

Upcoming 丁巳 days

The sexagenary day cycle repeats every sixty days. These are the next dates that fall on Ding Si.

2026-12-09
2027-02-07
2027-04-08
2027-06-07
2027-08-06
2027-10-05

Is this your day pillar?

You do not need to know your day pillar in advance. Enter your birth date, time and place, and the calculator works out all four pillars — then shows how your Day Master reads against the rest of the chart.

Cast your free BaZi chart

Other Ding days

All six Ding pillars share the same Day Master. For the stem on its own — its nature, strengths and blind spots — read the Ding Day Master guide.

This page is a study aid for classical BaZi symbolism, not a prediction. It describes tendencies and temperaments, not events, outcomes or dates. For medical, legal or financial decisions, consult a qualified professional.