己亥 ji hai

己 above, 亥 below

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

Where 己亥 sits in the five elements

Fire and Metal do not appear anywhere in this pillar.

Water leads at 45.8%, then earth at 41.7%.

What is buried inside 亥

亥 hides 2 stems. The primary is 壬 (Water), what the stem restrains; behind it sit 甲 (Wood, what restrains the stem).

己 meeting 亥: the 胎 stage

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

己 meets 亥 at the 胎 stage — conception.

亥 against 巳, with 寅

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

Clashes with

巳 (Snake) — 己巳

Combines with

寅 (Tiger) — 丙寅

Nayin: 平地木

Nayin (納音) groups the cycle in pairs, each with an image. This one shares its image with 戊戌: 平地木, “wood of the flat plain.”

How 己亥 is conventionally read

己 is cultivated soil: earth that is worked, turned, and made to grow things. 亥 is the water that gathers at the end and starts the next turn.

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

When the next 己亥 days fall

The sixty-cycle repeats every sixty days, so this pillar returns roughly every two months. The next one is 21 November 2026 (Saturday). Each is calculated at midday Beijing time; a birth in the hour before midnight can still belong to the previous 己亥 day, because the day rolls at 23:00 true solar time.

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

己 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:

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