TWICE Saju Chart: All 9 Members and the Fire Rat Year Four of Them Share

TWICE has been one of K-pop's steadiest acts for more than a decade, with nine members from Korea, Japan and Taiwan and a touring record that still places them among the top K-pop tours. Korean saju gives a different way to look at that steadiness. When we ran all nine members through our engine, two patterns showed up at once: four members share the exact same year pillar, and four members are Wood Day Masters. Neither of those is obvious from their birth years.

This post goes through all nine charts using only what holds no matter what hour each member was born. If you want to compare your own chart as you read, a free saju reading gives you your Day Master and Five Elements count in about a minute.

How We Read These Charts

Every chart here comes from the Sajumuse saju engine, the same engine behind more than 260 paid Sajumuse reports. It calculates the pillars, ten gods, hidden stems, twelve life stages and special stars exactly as it does for a customer's report.

No TWICE member has an official birth time, so we did not guess one. We ran each public birth date through all 12 possible birth hours and only report what stays the same in every one. The Year, Month and Day Pillars below are fixed. Anything that depends on the hour, like Day Master strength and the helpful element, is given as a count, for example "slightly weak in 11 of the 12 possible birth hours".

The readings are written by our Korean saju counselor, certified in Korea as a Myeongri Psychological Counselor (Level 1) and Family Psychological Counselor (Level 1). Birth dates are public profile dates. None of the members has had a reading with us, and nothing here is a prediction about anyone's private life.

All 9 TWICE Members at a Glance

All nine day pillars from our engine were also checked against the standard day count formula, and all nine matched.

Four Members, One Fire Rat Year

Look at the year column. Jeongyeon, Momo, Sana and Jihyo all sit on 丙子, the Fire Rat year pillar.

Jihyo is the surprise. Fans count her as a 1997 member, and on a Western calendar she is. But she was born on 1 February 1997, three days before Ipchun, the solar term that starts the saju year. In saju she belongs to the 1996 Fire Rat year with the other three. Our post on why the saju year changes at Ipchun explains why the boundary falls in early February rather than on January 1 or Lunar New Year.

The year pillar describes the outer circle: family background, early environment, the generation you grew up with. Four members sharing it is a neat picture of four people who trained and debuted side by side.

The Group's Five Elements

Across nine members and their three certain pillars, there are 54 characters:

This is one of the most even spreads we have seen in a large group. Earth, the element of the center, leads slightly, which reads as a group that holds together. Metal, the thin one, is the element of cutting and finishing. Three of the four Wood members have Metal only as a hidden stem.

Day Master by Day Master

The Wood Four: Jihyo, Mina, Dahyun and Chaeyoung

Four of nine members are Wood Day Masters. Jihyo is 甲, Yang Wood, the tall tree. Mina, Dahyun and Chaeyoung are all 乙, Yin Wood, the vine and the flower.

Jihyo, the leader, holds all five elements on her three certain pillars, and her month branch 丑 carries the Benefactor Star, 천을귀인, in our engine's output. Her month stem 辛 is her direct officer star, the star of structure and responsibility. A tree Day Master with all five elements and an officer star in the month is a classic leader's chart: someone who holds the frame for everyone. The engine reads her as weak in all 12 possible birth hours, with Wood and Water as her helpful pair every time. In plain terms, her chart is built to support others and is at its best when others support her back.

Mina is a vine in early spring. Her month branch 卯 is Wood at full strength, and the engine marks it as her 건록, the stage where a Day Master stands on its own ground. Her year and day branches are both 丑, and both carry the Flower Canopy, 화개, a star of artistry, solitude and inner focus. Our engine reads her as borderline in all 12 possible birth hours, so she sits close to balance. A quiet, inward artistic star twice, in a dancer's chart, is a pattern fans will recognize.

Dahyun has a striking detail: her three branches 寅, 巳 and 亥 are three of the four Travel Star branches, and our engine lists the Travel Star, 역마, on all three of her certain pillars. That is as much movement energy as a chart can show without a birth time. Her month 丁巳 is Fire, her output, the star of expression and wit.

Chaeyoung has three Earth characters out of six, and Earth is the wealth element for a Wood Day Master. Our engine reads her as weak in all 12 possible birth hours, with Wood and Water as the helpful pair. Her day branch 巳 holds the Travel Star, and her day pillar 乙巳 puts a flower on Fire, the Hurting Officer, which is the ten god of original expression. For a member known for her art and lyrics, that is a fitting placement.

The Two Swords: Momo and Sana

Momo and Sana are both 庚, Yang Metal, the sword. They also share the 丙子 year.

Momo's Day Pillar 庚戌 is one of the Powerhouse pillars, 괴강, associated with a sharp, controlled intensity. Her month 己亥 brings a resource star on top and Water below, and the engine flags the Travel Star and the scholar star 문창귀인 on that month. It reads her as slightly weak in 11 of 12 possible birth hours, with Metal and Earth as the helpful pair. A Powerhouse Day Pillar fits the group's main dancer: precision under pressure.

Sana's chart is one of the most unusual in the group: 丙子 / 庚子 / 庚子. Three 子 Water branches, the same Day Pillar repeated in the month, and no Wood or Earth anywhere, not even hidden. Water is the output element for Metal, the star of charm, talk and performance, and Sana's chart has it three times over. Our engine reads her as weak in all 12 possible birth hours, with Metal and Earth helpful in every one. A Metal chart pouring almost everything into Water is a fair description of someone whose energy goes outward to the people around her.

The Two Fires: Nayeon and Tzuyu

Nayeon is 丙, Yang Fire, the sun, and she holds all five elements on her three certain pillars. Her year and month branches, 亥 and 酉, both carry the Benefactor Star. The engine reads her as weak in all 12 possible birth hours, with Fire and Wood as her helpful pair every time, which fits a sun born in autumn, when the light is softer. Two Benefactor Stars in the outer pillars is traditionally read as help from seniors and from the people around you.

Tzuyu is 丁, Yin Fire, the candle. Her day branch 酉 carries a cluster of noble stars in our engine's output: 천을귀인, 문창귀인, 학당귀인 and 복성귀인. That is one of the densest noble star placements in the whole group. Her month branch 午 is her 건록, Fire standing on its own ground, and her chart has no Water at all. The engine reads her as borderline in 10 of 12 possible birth hours and strong in the other 2.

The One Ocean: Jeongyeon

Jeongyeon is the only Water Day Master, 壬, Yang Water, the ocean. Her month 戊戌 is a Powerhouse pillar, a mountain of Earth around the water, and Earth is her officer star. Her day branch 寅 carries the Travel Star and the scholar star 문창귀인. Our engine reads her as weak in all 12 possible birth hours, with Water and Metal as the helpful pair every time. Metal appears only as a hidden 辛 inside 戌. A single ocean held by mountains reads as a steady, dependable character with a lot of depth under the surface.

How the Nine Fit Together

• Wood feeds Fire. The four Wood members feed the two Fire members, Nayeon and Tzuyu, in the generating cycle. Nayeon and Tzuyu both have Fire and Wood as helpful elements, so the Wood four are, on paper, exactly what they need.
• Fire feeds Earth, Earth feeds Metal. Earth is the group's largest element, and it flows into the two Metal members. Momo and Sana both list Metal and Earth as helpful, so the group's Earth surplus supports them.
• Metal feeds Water. Momo and Sana in turn feed Jeongyeon, the only Water Day Master, whose helpful elements are Water and Metal.
• Water feeds Wood. Jeongyeon's Water, plus Sana's three 子 branches, flow back to the Wood four, whose helpful pair is Wood and Water.

That is a full generating loop: on paper, every Day Master group in TWICE is fed by another one. Our BTS saju compatibility breakdown uses the same method if you want to compare.

2026 and 2027 in Their Charts

2026 is 丙午, a Fire Horse year. For the four members on a 丙子 year pillar, 午 meets 子 in a clash, the strongest branch interaction in saju. A clash on the year pillar is read as movement in the outer circle, change of setting, schedule or surroundings, rather than as a personal event. For the Wood four, 2026 Fire is their output star, a year the engine reads as expression and visibility.

2027 is 丁未. For Mina, Dahyun and Chaeyoung, 丁 is Eating God and 未 is wealth, a pairing traditionally read as creative work turning into results; see our post on Eating God. For Momo and Sana, 丁 is the direct officer, a year of structure and recognition. As always, these describe tendencies in a chart, not forecasts, and our 2027 Fire Goat year guide covers every sign.

Find Your Own TWICE Match

1. Run a free saju reading with your birth date, and your birth time if you know it.
2. Note your Day Master. Wood puts you with Jihyo, Mina, Dahyun and Chaeyoung; Metal with Momo and Sana; Fire with Nayeon and Tzuyu; Water with Jeongyeon.
3. Check your year pillar. If you were born between Ipchun 1996 and Ipchun 1997, you share the Fire Rat year with four members.
4. Use the loop above: the member whose Day Master feeds yours is the one your chart leans on.

Frequently Asked Questions

Why is Jihyo in the 1996 saju year?

Saju years start at Ipchun, around 4 February. Jihyo was born on 1 February 1997, before Ipchun, so her year pillar is 丙子, Fire Rat, the same as Jeongyeon, Momo and Sana.

Which TWICE members are Wood Day Masters?

Four: Jihyo is 甲 Yang Wood, and Mina, Dahyun and Chaeyoung are 乙 Yin Wood.

Which TWICE member has the most Water?

Sana. Her pillars 丙子 / 庚子 / 庚子 hold three 子 Water branches, and her chart has no Wood or Earth at all.

Do you know the members' birth times?

No. None is officially published, so we ran each birth date through all 12 possible birth hours and only report what holds in every case.

Get Your Own Chart Read the Same Way

Everything in this post, the full engine chart, the ten gods, the life stages, the special stars and the years ahead, is what goes into a Premium report, with your exact birth time added. If you want your own chart read this way, the Premium Saju Report covers it in full, written by the same Korean saju counselor.