Day pillar 30 of 60

癸巳 gui si

Water stem over Fire branch. The yin water day master, sitting on the Snake (巳).

Every structural fact about 癸巳 below can be checked against an almanac; only the passage marked conventionally read as is interpretation.

癸 above, 巳 below

癸 Heavenly stem Water 水 · yin
巳 Earthly branch Fire 火 · Snake

The stem controls the branch: Water restrains Fire. The pillar is internally under tension, and that tension is structural, not a mood.

Where 癸巳 sits in the five elements

Wood does not appear anywhere in this pillar.

Fire40.7%
Water37.0%
Earth11.1%
Metal11.1%

Fire leads at 40.7%, then water at 37.0%.

What is buried inside 巳

丙Fireprimary
庚Metalmiddle
戊Earthresidual

巳 hides 3 stems. The primary is 丙 (Fire), what the stem restrains; behind it sit 庚 (Metal, what produces the stem) and 戊 (Earth, what restrains the stem).

癸 meeting 巳: the 胎 stage

The twelve stages (十二長生): yang stems run forward, yin stems backward.

胎
conception conception — a new phase that has begun but is not yet visible

癸 meets 巳 at the 胎 stage — conception.

巳 against 亥, with 申

Opposite across the cycle (六沖), and paired with (六合):

Clashes with
亥 (Pig) — 乙亥
Combines with
申 (Monkey) — 壬申

Nayin: 长流水

Nayin (納音) groups the cycle in pairs, each with an image. This one shares its image with 壬辰: 长流水, “water of the long stream.”

How 癸巳 is conventionally read

癸 is water that arrives quietly: rain, mist, groundwater. 巳 is the fire that has just caught, still gathering.

A water-element day master on a fire footing — one of eight characters, which colours a chart and does not fix the person.

When the next 癸巳 days fall

The sixty-cycle repeats every sixty days, so this pillar returns roughly every two months. The next one is 15 November 2026 (Sunday). Each is calculated at midday Beijing time; a birth in the hour before midnight can still belong to the previous 癸巳 day, because the day rolls at 23:00 true solar time.

DateWeekdayYear / month / day pillar
2026-11-15Sunday丙午 己亥 癸巳
2027-01-14Thursday丙午 辛丑 癸巳
2027-03-15Monday丁未 癸卯 癸巳
2027-05-14Friday丁未 乙巳 癸巳
2027-07-13Tuesday丁未 丁未 癸巳
2027-09-11Saturday丁未 己酉 癸巳

Showing up to eight of the 6 occurrences in the next twelve months, from 2026-10-31.

癸 on six different footings

Six pillars carry this stem. It is the same day master every time, so everything that differs below is caused by the branch underneath it:

PillarBranchFootingStage
癸酉酉 · RoosterWater on Metalillness
癸未未 · GoatWater on Earthtomb
癸巳 ←巳 · SnakeWater on Fireconception
癸卯卯 · RabbitWater on Woodbirth
癸丑丑 · OxWater on Earthcap and girdle
癸亥亥 · PigWater on Waterpeak

Here the footing is Fire — what the stem restrains. The other five branches this stem sits on are 酉 (Metal), 未 (Earth), 卯 (Wood), 丑 (Earth), 亥 (Water).

The Water element  ·  The Fire element  ·  30 worked reference charts  ·  How the calculation is verified