Yang Earth Horse (Wu Wu, 戊午) day pillar
A Yang Earth day master, the Mountain, sitting on the Horse.
Your day pillar is the pair of characters for the day you were born. The top one, the stem, is your day master — you. The bottom one, the branch, is what it sits on. The sixty pillars come round in turn, one a day, so about one person in sixty was born on a Wu Wu day.
Its sound element: Fire in the Sky (Tian Shang Huo, 天上火)
The sixty pillars go in pairs, and each pair carries a sound element (Na Yin, 纳音) — an image, separate from the element of the stem. The classic San Ming Tong Hui (三命通会) describes each pillar by it:
The disc of the sun: feared in summer, loved in winter; it shuns the Wu Zi, Ji Chou, Jia Yin and Yi Mao pillars — thunder, lightning, rain and dew.
日轮，夏则人畏，冬则人爱，忌戊子、己丑、甲寅、乙卯
What the Horse holds, and what it is to Yang Earth
Each branch holds one to three stems. The ones under your own day master are the closest things to you in the chart.
- Yin Fire (Ding, 丁), the main one — Direct Resource (Zheng Yin, 正印). What produces you, opposite polarity. Straightforward support: what teaches, shelters and backs you.
- Yin Earth (Ji, 己) — Rob Wealth (Jie Cai, 劫财). Same element, opposite polarity. A peer who takes rather than shares — the tradition reads it as what draws on your resources through people close to you.
A Wu Wu day at each birth hour: San Ming Tong Hui (三命通会)
Two volumes of this classic go hour by hour, and at each hour say something about this exact day pillar. These are its sentences on a Wu Wu day; what it says about the other five Yang Earth days is on the Yang Earth day master page. Hours are true solar time, not clock time.
Rat hour 23:00–01:00 · Yang Water Rat (Ren Zi, 壬子)
hour and day clash together — grief over wife and children. Snake (巳) and Horse (午) in year or month, the censorate. Tiger (寅), Rabbit (卯) and Pig (亥), the six ministers. A Monkey (申) month running Wood and Fire periods, marquis or earl. It dislikes a Fire Horse (丙午) month, the body not whole; Water Pig (癸亥), self-punishment and early death. Where Rat (子) and Horse in year and month are unmixed, and Ox (丑) and Dog (戌) punish besides, both govern great nobility.
时日并冲，忧伤妻子。巳午年月，风宪。寅卯亥，六卿。申月，行木火运，侯伯。忌丙午月，身不全；癸亥，自刑夭。年月子午不杂，丑戌又刑，俱主大贵。
Ox hour 01:00–03:00 · Yin Water Ox (Gui Chou, 癸丑)
Tiger (寅), Dog (戌), Goat (未) and Horse (午) in year or month, clever, outstanding, with awe and authority.
寅戌未午年月，聪明特达威权。
Tiger hour 03:00–05:00 · Yang Wood Tiger (Jia Yin, 甲寅)
the day is the Yang Blade (羊刃) and the hour the Seven Killings (偏官) — the blade binding the Killings (煞), noble. Snake (巳), Rooster (酉) and Ox (丑) months, the pen and knife startle people; the checking should not be carried too far. Tiger (寅), Rabbit (卯), Dragon (辰), Snake, Dog (戌) and Rat (子) in year or month with something at the stems to check it — all govern great nobility.
曰羊刃，时偏官，以刃合煞，贵。巳酉丑月，刀笔惊人，制伏不宜太过；寅卯辰巳戌子年月，天干有制伏，俱主大贵。
Rabbit hour 05:00–07:00 · Yin Wood Rabbit (Yi Mao, 乙卯)
the blade pattern; Direct Officer (正官) taking the blade away is blessing. Rat (子), Tiger (寅), Rabbit (卯), Dragon (辰), Horse (午), Goat (未), Monkey (申) and Pig (亥) in year or month all govern conspicuous nobility.
刃格，正官去刃为福，子寅卯辰午未申亥年月，俱主贵显。
Dragon hour 07:00–09:00 · Yang Fire Dragon (Bing Chen, 丙辰)
Pig (亥) and Rabbit (卯) in year or month running a northeastern period, wealth and rank. Goat (未) and Ox (丑) running a southwestern period, the censorate.
亥卯年月，行东北运，富贵。未丑，行西南运，风宪。戊申时丙辰时，辰戌丑未月，贵；不通土气，行土运亦贵。
Snake hour 09:00–11:00 · Yin Fire Snake (Ding Si, 丁巳)
where the pillars have no Yang Wood (甲), Yin Wood (乙), Rabbit (卯) or Tiger (寅), it is the day’s prosperity star returning at the hour (日禄归时) pattern, and Yang Earth (戊)'s prosperity star (禄) resides at the hour while Yin Fire (丁)'s prosperity star is at the day — an exchanged the prosperity star, highly noble; running Hurting Officer (伤), Eating God (食) and Resource (印) periods, favourable. With Yang Wood, Yin Wood, Tiger, Rabbit or Goat (未) characters, taking officer and Resource for use is also noble.
柱无甲乙卯寅，日禄归时格，又戊禄居时，丁禄居日，为互换禄，高贵；行伤食印运，吉；有甲乙寅卯未字，作官印取用亦贵。
Horse hour 11:00–13:00 · Yang Earth Horse (Wu Wu, 戊午)
punished first and brought out after, and often it does not end well. Tiger (寅), Snake (巳), Horse (午) and Dog (戌) in year or month, Direct Resource (印绶), greatly noble. Pure Horse, a military office with awe and authority, the name weighty in the garrison. Pig (亥), Rabbit (卯), Goat (未) and Monkey (申), wealth and rank both complete.
先刑后发，多不善终。寅巳午戌年月，印绶，大贵。纯午，武职威权，名重镇藩。亥卯未申，富贵双全。
Goat hour 13:00–15:00 · Yin Earth Goat (Ji Wei, 己未)
The Yang Blade (羊刃) and Seven Killings (偏官); it governs a person of scheme and plan, the life short — otherwise wife and children are hard to keep, and must be set up and made over again. Horse (午) and Pig (亥) in year or month with Metal and Earth periods, noble; Monkey (申) and Rooster (酉), wealthy.
羊刃偏官，主人机谋，寿促，不然，妻子难为重立重成。午亥年月，金土运，贵；申酉，富。
Monkey hour 15:00–17:00 · Yang Metal Monkey (Geng Shen, 庚申)
Goat (未), Rooster (酉) and Ox (丑) in year or month, and the pillars with no Yang Fire (丙), Yang Wood (甲), Rabbit (卯) or Tiger (寅), it enters the bound-the prosperity star (禄) pattern; running a northwestern period, noble. With Yang Wood and Yang Fire besides, the bound spirit hidden and the Killings (煞) gone, the four pillars all yang — greatly noble.
未酉丑年月，柱无丙甲卯寅，入合禄格，行西北运，贵；有甲丙又合神藏煞没，四柱纯阳格，大贵。
Rooster hour 17:00–19:00 · Yin Metal Rooster (Xin You, 辛酉)
spring and summer ordinary. Autumn, Hurting Officer (伤官) injured to the full, authority and rank with the life short. Winter, wife and children hard to keep.
春夏平常。秋，伤官伤尽，权贵寿促。冬，难为妻子。
Dog hour 19:00–21:00 · Yang Water Dog (Ren Xu, 壬戌)
born in Tiger (寅), Horse (午) or Dog (戌) months, with much Fire in hour and year, read as Direct Resource (印绶) — solitude and harm are not escaped, hard first and easy after; if not noble then wealthy. A Rabbit (卯) month, the officer star checking the blade, favourable.
寅午戌月生，时岁火多，以印绶论，未免孤克，先难后易，不贵即富。卯月，官星制刃，吉。
Pig hour 21:00–23:00 · Yin Water Pig (Gui Hai, 癸亥)
noble. Tiger (寅) and Snake (巳) in year or month, where Earth (土) is thick and the Water fine, sixth or seventh grade. Rabbit (卯), Goat (未), Dragon (辰) and Ox (丑), all favourable.
贵。寅巳年月，土厚水秀地方，六七品贵。卯未辰丑，俱吉。
Named days in Yuan Hai Zi Ping (渊海子平)
These are decided by the day pillar alone, so everyone born on a Wu Wu day is in them. The work attaches conditions to most of them; the passage is given whole.
The blade on the day
The day pillar is one of Earth Horse (戊午), Fire Horse (丙午) or Water Rat (壬子).
日刃与阳刃同。日刃有戊午、丙午、壬子也，与阳刃同法。
The Horse and the other animals
When the day branch meets these — in a year, a ten-year luck period, or someone else’s chart — the classics read it by these relationships.
- Clashes with
- Rat
- Pairs with (six harmony)
- Goat
- In a trine with
- Tiger, Dog
- Punishment with
- Horse (itself)
- Harms
- Ox
- Breaks
- Rabbit
The next Wu Wu days: 10 December 2026, 8 February 2027, 9 April 2027. It returns every sixty days.
Famous people born on a Wu Wu day
- Mao Dun Writer · Midnight; the Mao Dun Literature Prize bears his name
The Yang Earth day master · Before it: Ding Si · After it: Ji Wei · All sixty day pillars