Day pillar 54 of 60

丁巳 ding si

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

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

丁 above, 巳 below

丁 Heavenly stem Fire 火 · yin
巳 Earthly branch Fire 火 · Snake

The stem and the branch carry the same element (Fire), which is the most single-minded pairing in the cycle. Nothing here pulls in two directions.

Where 丁巳 sits in the five elements

Wood and Water do not appear anywhere in this pillar.

Fire77.8%
Earth11.1%
Metal11.1%

Fire leads at 77.8%, then earth at 11.1%.

What is buried inside 巳

丙Fireprimary
庚Metalmiddle
戊Earthresidual

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

丁 meeting 巳: the 帝旺 stage

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

帝旺
peak the peak; strongest here, and closest to the point where it starts to fall

丁 meets 巳 at the 帝旺 stage — peak.

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: 沙中土

Nayin (納音) groups the cycle in pairs, each with an image. This one shares its image with 丙辰: 沙中土, “earth in the sand.”

How 丁巳 is conventionally read

丁 is a flame held in the hand: smaller than 丙, more deliberate, warmer at close range. 巳 is the fire that has just caught, still gathering.

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

When the next 丁巳 days fall

The sixty-cycle repeats every sixty days, so this pillar returns roughly every two months. The next one is 9 December 2026 (Wednesday). Each is calculated at midday Beijing time; a birth in the hour before midnight can still belong to the previous 丁巳 day, because the day rolls at 23:00 true solar time.

DateWeekdayYear / month / day pillar
2026-12-09Wednesday丙午 庚子 丁巳
2027-02-07Sunday丁未 壬寅 丁巳
2027-04-08Thursday丁未 甲辰 丁巳
2027-06-07Monday丁未 丙午 丁巳
2027-08-06Friday丁未 丁未 丁巳
2027-10-05Tuesday丁未 己酉 丁巳

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

丁 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
丁卯卯 · RabbitFire on Woodillness
丁丑丑 · OxFire on Earthtomb
丁亥亥 · PigFire on Waterconception
丁酉酉 · RoosterFire on Metalbirth
丁未未 · GoatFire on Earthcap and girdle
丁巳 ←巳 · SnakeFire on Firepeak

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

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