Ji Hai 己亥 Day Pillar
Ji Hai 己亥 is number 36 of the sixty. The Day Master is Ji 己, yin Earth; the branch Hai 亥 is Water, zodiac Pig. Na Yin is Wood on Level Ground.
At a glance
| Position in the cycle | 36 / 60 |
|---|---|
| Day Master (stem) | 己 |
| Day branch | 亥 |
| Day Master element | yinEarth |
| Branch element | Water |
| Zodiac | Pig |
| Na Yin | Wood on Level Ground |
| Hidden stems | Ren 壬, Jia 甲 |
| Void branches | Chen 辰, Si 巳 |
Hidden stems and their Ten Gods
A branch is more than its surface element. Hai 亥 hides Ren 壬, Jia 甲; read against the Day Master Ji 己 they give the Ten God relations below. Hidden stems are what element strength is actually judged on — counting only the four visible stems badly understates what the branches carry.
| Hidden stems | Day Master element | Ten God |
|---|---|---|
| Ren 壬 | Water | Direct Wealth |
| Jia 甲 | Wood | Direct Officer |
Next Ji Hai 己亥 days
Day pillars run on a fixed 60-day cycle independent of month and year. The dates below are derived straight from the day count, so no calendar reform affects them.
- Calculating…
Where Ji Hai 己亥 sits in a chart
The day pillar is the only one read from itself — every Ten God in the year, month and hour pillars is defined relative to the Day Master Ji 己. Two people born in the same year and month with different day stems therefore have completely different charts. In Ji Hai 己亥 the Day Master Ji 己 is yin Earth and sits on Hai 亥, which is Water; the relation between them is Day Master controls the branch. This seat is classically read as the Day Master's immediate environment.
Related pillars
The other five pillars sharing the Day Master Ji 己, and the other four sharing the branch Hai 亥:
Same Day Master (Ji 己)
Same branch (Hai 亥)
Sources
- lunar-javascript (6tail, MIT) — solar-term instants, 干支 pillars, 大運/流年, 胎元/命宮/身宮 and the almanac tables.
- Hong Kong Observatory, Date and Time of the 24 Solar Terms — the reference used to check solar-term instants.
- Xieji Bianfang Shu and Sanming Tonghui — classical sources for the Wuhu Dun and Wushu Dun stem rules, hidden stems and the Ten Gods.
Algorithms last checked: 2026-07 · Method and accuracy