FateHiveSaju reading
Day Pillar #42 of 60

Yi Si Day Pillar 乙巳

A vine in the warm sun

Day Master
Day Branch
Snake (Fire)
Spouse palace
Hurting Officer
Life stage

What does the Yi Si Day Pillar mean?

The Day Pillar is the two characters of the day you were born: a Heavenly Stem on top (your Day Master, the “you” of a Saju chart) and an Earthly Branch below (your inner self and spouse palace). In Yi Si (乙巳), the Day Master is Yi Wood (flexible grass and climbing vines) sitting on the Snake branch, whose element is Fire.

You sit on the fire of expression (Hurting Officer), clever, quick and good with words. A strategist who moves while quietly calculating, you show a sharp sense in the fields that interest you.

Yi Si personality: the Yi Wood Day Master

Yi Wood has the flexibility of grass and vines that sway in the wind without breaking. You adapt well to circumstances, and behind the soft exterior lies strong persistence. You are skilled with people, quick to read the mood and attentive to detail. You may look indecisive, so practice stating a clear opinion at the moments that matter.

What makes Yi Si different from the other five Yi Wood Day Pillars is the branch it sits on, covered below.

The Snake seat: your inner self

With Si beneath your Day Master, you are quick-witted with a good competitive sense and hide passion inside. There is the energy of bright Fire in your spouse seat, so you connect with smart, attractive people. When jealousy and attachment rise, the ease of pausing for one beat protects the relationship.

Yi Si in love and marriage

The energy of wit and critique (Hurting Officer) sits in your spouse seat, so you are drawn to articulate, distinctive partners. The key is to refine your expression so a sharp tongue doesn’t hurt.

Yi Wood is gentle and quick to notice, reading your partner’s heart with care. Good at matching the mood and being considerate, but if you swallow what you want to say, hurt builds up and you may suddenly close the door. Say small things early.

Hurting Officer here means: Hurting Officer (Shang Guan) stands for sparkling creativity and a sharp critical spirit. Talented at trying new ways without being bound by existing molds, you often stand out in the arts, planning and fields that need ideas. But with a temperament that pushes back against rules and authority, friction arises easily in organizational life, so refining your way of expressing yourself lets your talent be recognized more.

Energy and life stage

Bathing (Mu Yu): a time of washing and dressing up. Charm and sensitivity rise, but the energy is also exposed to mood swings and temptation.

Hidden inside the Snake branch: Wu (Earth, 7 days), Geng (Metal, 7 days), Bing (Fire, 16 days). These quieter energies show up in private, under stress or later in life.

Health tendencies of Wood Day Masters

Areas to look after: liver, gallbladder, eyes, muscles and nerves.

Too much Wood energy makes irritation and anger rise easily, and you may often get headaches, a stiff neck and shoulders, and tired eyes. Rather than reaching for alcohol to dampen anger, work it off with walking and stretching.

Too little Wood energy can leave muscles and ligaments stiff, eyes tired and motivation low. Top up the energy of growth with green vegetables, regular stretching and morning sunlight.

Yi Si compatibility

  • Six Harmony: the Snake pairs with the Monkey. People with a Monkey Day Branch often feel an easy pull toward you.
  • Three Harmony: the Ox · Rooster · Snake form a Metal team, so those animals tend to bring out your best.
  • Clash: the Snake clashes with the Pig. It is not doom, only a spot where friction and change come easily.
  • Perfect match on stem and branch: Geng Shen (庚申) combines with Yi Si on both the stem and the branch.
  • Opposite pillar (most friction): Xin Hai (辛亥): its stem is Seven Killings to you and its branch clashes with yours.

Day Pillars are one part of compatibility. For a full comparison of two charts, try the compatibility reading.

How do I find my Day Pillar?

Your Day Pillar depends on your birth date, not your birth year. Enter your date of birth in the Day Pillar finder or get a complete chart with the free Saju calculator, which also gives your Day Master strength, Useful God and Luck Cycles.

Other Yi Wood Day Pillars

Day Pillar readings are simplified interpretations following common Saju practice and differ between schools. They are for entertainment and self-reflection.