癸巳

Gui Si (癸巳) — Yin Water on the Snake

Mist rising off a warm stone.

Heavenly stem: 癸 · Gui · Yin Water
Earthly branch: 巳 · Si · Snake
Na Yin: Long Flowing Water
Hidden stems: Bing, Geng, Wu
Hidden gods: Direct Wealth, Direct Resource, Direct Officer
Branch element: Fire

Soft water meeting heat, evaporating into sharp insight.

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 Gui Si day has Gui water as their Day Master, sitting on the 巳 (fire) branch.

Personality

Gui water is intuitive; the Snake underneath adds strategy and heat. You read rooms accurately and prefer to work through insight rather than force, which makes you quietly effective and occasionally hard to follow. You often arrive at the answer before you can show the steps.

Work and vocation

Research, consulting, therapy, design, or investment — work that rewards pattern recognition more than visible effort.

Relationships

Perceptive and understated. Say the conclusion out loud and show one step; other people are not being slow, they are being asked to trust a leap.

Health and rhythm

Fluid balance, sleep and heat regulation. Overthinking shows up as heat first, usually at night.

Upcoming 癸巳 days

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

2026-11-15
2027-01-14
2027-03-15
2027-05-14
2027-07-13
2027-09-11

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 Gui days

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