Day pillar type
Black Pig (Gui Hai): Personality and Matches
Hongsimdang Editorial Team · Last updated
Black Pig (Gui Hai) is the day pillar where rain and mist that seep in quietly (癸) rests on great water in winter (亥). In short, it holds steady at the center and heads straight in the direction you choose.
What decides the Black Pig: day stem and day branch
Your day pillar is the stem and branch of the day you were born: the upper character is the day stem and the lower one is the day branch. For Black Pig (Gui Hai), the day stem is 癸 (Yin Water) and the day branch is 亥 (Pig). The “Black” in the name is the color of the day stem’s element, and “Pig” is the zodiac animal of the day branch. Both are Hongsimdang’s own labels.
The day stem 癸 is likened to rain and mist that seep in quietly. You say little and keep watching, and by the time you speak you have usually reached the heart of the matter. The day branch 亥 is great water in winter. The Pig is popularly pictured as big-hearted, curious and deeply feeling, but that is the folk image of the zodiac. The actual reading comes from the element relationship and life stage that follow.
Read as elements, your stem and branch form a matching pair, with the same element on both sides. Because your day stem and day branch point at the same element, the face you show and what you feel inside tend to agree, and your center is hard to shake. The branch 亥 also holds the hidden stems 戊, 甲, 壬, which lay another side beneath the one that shows.
Seen from your day stem 癸, the day branch 亥 sits at the Peak (Di Wang) stage of the twelve life stages. It is the stage where energy is at its fullest, and leadership and capacity show in a big way.
How the Black Pig shows up at work
Your stem and branch pull the same way, so once a direction is set you rarely hesitate, and you work best where roles are clear. You are more likely to clash with a boss who rewrites the plan midstream, or a workplace whose standards change from day to day.
You produce your best results when you can immerse yourself in a subject you care about, and your ability to listen makes you the one who eases tension on a team. Until you feel sure, you can hide for too long, or keep putting off the first step.
When fatigue or low mood deepens, you sink into your feelings and put off sorting out practical matters.
Before a large expense or a promise, wait a day and talk it over with one outside person before you decide.
How the Black Pig shows up in relationships and love
What you show and what you feel sit close together, so affection and irritation both tend to appear on your face. Because your will runs in one direction, someone just as stubborn can turn things into a contest. A partner who can say “let’s pause for a moment” is more likely to last.
You give generously to people you trust, but once you have fixed on a direction in your mind you tend to run straight ahead and rarely turn back.
A good partner appreciates your generosity and offers a practical view when your assumptions run ahead.
How the Black Pig handles money
Your spending follows your convictions, and you will put a sizable sum behind anything you believe in. With joint investments or loans, being that invested makes it hard to stay detached, so agree on the rules in advance.
You save quietly, bit by bit, and gather information before you act, so big mistakes are rare. The cost is that you sometimes let a good opening pass.
You pour money generously into people and things you love, and you also bring it in, but be careful about putting in everything at once on an assumption you cannot walk back.
Day branches that harmonize with the Black Pig and ones that clash
The day branch of Black Pig (Gui Hai) is 亥 (Pig). Which day branch the other person has decides the relation between your two branches, as shown below. A day branch that is not listed has no direct harmony or clash with yours.
| Their day branch | Relation between branches | How it reads |
|---|---|---|
| Rabbit (卯) | Triple Harmony partner | moves in the same direction, and the group is complete once a third branch joins |
| Goat (未) | Triple Harmony partner | moves in the same direction, and the group is complete once a third branch joins |
| Tiger (寅) | Six Harmony, Break | pulls together and fills in; cracks are likely |
| Dragon (辰) | Resentment / Ghost Gate | attracts yet irritates |
| Snake (巳) | Clash | head-on opposition |
| Monkey (申) | Harm | small misunderstandings pile up |
| Pig (亥) | Self-punishment | the same habit amplifies |
Harmony, Clash, Punishment, Harm, Break and Resentment are relations fixed mechanically by the pair of branches. They say nothing about anyone’s character being better or worse.
2027 (Ding Wei year) and the Black Pig
2027 is a Ding Wei year. The year’s stem and branch change over at the start of spring, around February 4, 2027. The Ding of 2027 is the money and openings your day stem steers. The amounts and range that move tend to widen, and your eye for managing what comes in and goes out is tested. The year branch Wei has no direct Six Harmony or Clash with your day branch, so the color of this year shows mainly in its relation to your day stem.
What the day pillar alone cannot tell you
The day pillar is one of the four pillars of a chart. The year, month and hour pillars, the ten-year luck cycles, and Zi Wei Dou Shu and Western astrology readings are not included on this page. Two people with the same Black Pig can show it differently depending on their other pillars, and your day pillar alone does not settle personality or fate.
To see all four pillars, use the free BaZi calculator. To read a specific question through to timing, a personal reading is the next step.
See the whole chart with the free BaZi calculator →Personal readings →Day Pillar Types →
Frequently asked questions
How do I find out whether I am a Black Pig?
The day of Black Pig (Gui Hai) comes around once every 60 days, and people born on a 癸亥 day belong to this type. Enter your birth date on the day pillar type index to check.
Why am I a Black Pig if my birth-year animal is not the Pig?
The birth-year animal comes from the year branch, while the Pig in Black Pig comes from the day branch 亥. They are two separate calculations. Even if your birth year belongs to another animal, a day branch of 亥 makes your day pillar a Pig.
Which types match the Black Pig?
Looking only at day branches, the Six Harmony partner of 亥 is the Tiger (寅), and the clash comes from the Snake (巳). That is one narrow view. How well two people fit depends on all four pillars and on how they treat each other.
See other types
Same color
- Black Monkey (Ren Shen)
- Black Rooster (Gui You)
- Black Horse (Ren Wu)
- Black Goat (Gui Wei)
- Black Dragon (Ren Chen)
- Black Snake (Gui Si)
- Black Tiger (Ren Yin)
- Black Rabbit (Gui Mao)
- Black Rat (Ren Zi)
- Black Ox (Gui Chou)
- Black Dog (Ren Xu)
Same animal