Sexagenary cycle · position 12 of 60
乙亥
Yin Wood Pig 乙亥: 1935, 1995, 2055 Years & Na Yin
乙亥 Yǐ–Hài is pillar 12 of 60: Yin Wood over the Pig’s Water branch, with Na Yin Mountain-top fire 山头火. It names 1935, 1995, 2055 and returns as a day pillar every 60 days.

What is fixed inside 乙亥
Mountain-top fire
Mountain-top fire is presented in the classical imagery as light partly held within the mountain, rather than brightness exposed equally in every direction. Beside a day pillar, it suggests an inwardly vivid position whose expression depends on the viewpoint. The contrast is between having a clear inner flame and making that light legible beyond its shelter.
山头火
- English association
- Mountain-top fire
- Associated phase
- 火 Fire
- Shares this Na Yin
- 甲戌 Yang Wood Dog
The 亥 Hai coordinate
- Animal
- Pig
- Branch polarity
- Yin
- Double hour
- 21:00–22:59
- Month opens at
- 立冬 Start of Winter
- Direction
- North-northwest
Inside this branch · 藏干
Hidden stems carried by 亥
The relationship name below compares each interior stem with 乙 Yi as the reference stem.
- 01
壬
Primary interior stem
正印 Direct Resource - 02
甲
Middle interior stem
劫财 Rob Wealth
Where 乙亥 returns
- Cycle position
- 12 / 60
- Ten-position decade · 旬
- 甲戌
- Stem stage at this branch
- 死 Death
Annual returns in the supported range
Every occurrence from 1901 through 2099 is shown.
- 1935乙亥
- 1995乙亥
- 2055乙亥
乙亥 as a day pillar
Yi brings the image of supple growth that reaches its destination through small adjustments. A Day Master reading can explore adaptability, responsiveness and the ability to work with surrounding conditions. The vine’s connection to a larger tree also gives this image a relational quality: support can extend its reach, while excessive accommodation can obscure its own direction.
乙 above 亥
Water generates Wood, so the branch phase feeds the visible stem. The day branch holds Ren 壬 (Direct Resource), Jia 甲 (Rob Wealth) relative to this Day Master.