Free Saju calculatorYour birth chart, ready to paste into any AI.

Saju is Korea's traditional birth chart, read from the year, month, day and hour you were born. Copy yours as a prompt for ChatGPT, Claude or Gemini. No sign-up, nothing stored.

This is an example for someone born 15 May 1990, 10:30, Seoul. Enter your own details above and press Calculate to replace it with your chart.

Four Pillars (example)

Chinese labels

Day Master 庚 Gyeong · Yang MetalWhat Gyeong means →

Day pillar 庚辰 Gyeong-JinWhat Gyeong-Jin means →

HourRob Wealth劫財辛Sin巳SaSeven Killings七殺

DayDay Master日主庚Gyeong辰JinIndirect Resource偏印

MonthRob Wealth劫財辛Sin巳SaSeven Killings七殺

YearFriend比肩庚Gyeong午ODirect Officer正官

Five Elements

You are mostly Metal 43%

3%Wood
30%Fire
19%Earth
43%Metal
5%Water

Hidden stems	Mu戊Gyeong庚Byeong丙	Eul乙Gye癸Mu戊	Mu戊Gyeong庚Byeong丙	Gi己Jeong丁
Qi phase (12 stages)	Birth長生	Nurture養	Birth長生	Bath沐浴
Symbolic stars	Mangsin (disgrace)亡神 Bokseong (blessing noble)福星貴人 Amnok (hidden prosperity)暗祿 Hyeonchim (hanging needle)懸針	Wolsal (month)月殺 Canopy Star華蓋 Ildeok (day virtue)日德 Kui Gang魁罡 Heavenly Doctor天醫	Mangsin (disgrace)亡神 Bokseong (blessing noble)福星貴人 Amnok (hidden prosperity)暗祿 Hyeonchim (hanging needle)懸針	General Star將星 Bokseong (blessing noble)福星貴人 Tanghwa (scalding fire)湯火 Hyeonchim (hanging needle)懸針
Interactions	—	—	—	—

Not sure what a label means? Open the glossary
Solar date 1990-05-15 · age 36
True solar time correction: −28 min

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# Four Pillars of Destiny (Saju / BaZi) Chart

Below is a complete Four Pillars (사주팔자 / 八字) natal chart calculated from birth data. Please act as an experienced Saju/BaZi consultant and give a detailed, structured reading: personality and Day Master analysis, five-element balance, strengths and weaknesses, career and wealth tendencies, relationships, health cautions, and how the current luck pillar interacts with the natal chart. Explain your reasoning using the chart data. Only the current luck pillar is provided, so do not invent other luck pillars or year-by-year forecasts.

## Birth data
- Birth date: 1990-05-15 (solar (Gregorian) calendar)
- Birth time: 10:30
- Gender: Female
- Birth place: Seoul, Seoul, South Korea
- Time zone of birth place: Asia/Seoul
- Current age (as of 2026-10-01): 36

## Four Pillars
Day Master (일간 / 日主): **庚 Gyeong (Yang Metal)**

|  | Hour pillar | Day pillar | Month pillar | Year pillar |
|---|---|---|---|---|
| Heavenly Stem (天干) | 辛 Sin (Yin Metal) | 庚 Gyeong (Yang Metal) | 辛 Sin (Yin Metal) | 庚 Gyeong (Yang Metal) |
| Earthly Branch (地支) | 巳 Sa (Snake, Yin Fire) | 辰 Jin (Dragon, Yang Earth) | 巳 Sa (Snake, Yin Fire) | 午 O (Horse, Yang Fire) |
| Pillar (干支) | 辛巳 Sin-Sa | 庚辰 Gyeong-Jin | 辛巳 Sin-Sa | 庚午 Gyeong-O |
| Hidden Stems (지장간 / 藏干) | 戊 Mu, 庚 Gyeong, 丙 Byeong | 乙 Eul, 癸 Gye, 戊 Mu | 戊 Mu, 庚 Gyeong, 丙 Byeong | 己 Gi, 丁 Jeong |
| Ten God of Stem (십성) | Rob Wealth (劫財) | Day Master | Rob Wealth (劫財) | Friend (比肩) |
| Ten God of Branch (십성) | Seven Killings (七殺) | Indirect Resource (偏印) | Seven Killings (七殺) | Direct Officer (正官) |
| Qi phase / 12 stages (12운성) | Birth (長生) | Nurture (養) | Birth (長生) | Bath (沐浴) |
| Symbolic stars (신살) | Mangsin (disgrace, 亡神) | Wolsal (month, 月殺), Canopy Star (華蓋) | Mangsin (disgrace, 亡神) | General Star (將星) |

## Five Elements distribution (오행)
- Heavenly Stems: Wood 0, Fire 0, Earth 0, Metal 4, Water 0
- Earthly Branches: Wood 0, Fire 3, Earth 1, Metal 0, Water 0
- Total: Wood 0, Fire 3, Earth 1, Metal 4, Water 0
- Weighted share (hidden stems and pillar position included): Wood 3%, Fire 30%, Earth 19%, Metal 43%, Water 5%
- Missing elements: Wood, Water
- Void branches (공망 / 空亡): 申 Sin, 酉 Yu

## Day Master strength, structure and Useful God (용신)
- Day Master strength: Strong (신강), score 61/100 (0 = weakest, 100 = strongest)
- Chart structure (격국): Companion structure (比劫格)
- Season of birth month: Summer (month branch 巳 Sa)
- Useful God by strength balance (억부용신): elements Fire; stems 丙 Byeong, 丁 Jeong
- Useful God by climate (조후용신): primary 壬 Im; secondary 戊 Mu, 丙 Byeong, 丁 Jeong
- Final Useful God stems: 壬 Im, 戊 Mu
- Element roles: Wood = Favorable (喜神); Fire = Favorable (喜神); Earth = Harmful (仇神); Metal = Unfavorable (忌神); Water = Useful God (用神)
- Climate indices: warmth 5 (positive = hot/dry tendency, negative = cold), moisture -2 (positive = wet, negative = dry)
- Auspicious stars (길신): Monthly Virtue (月德貴人), Canopy Star (華蓋)
- Inauspicious stars (흉신): Robbing Star (劫殺)

## Stem and branch interactions (합충형파해)
- None

## Current 10-year Luck Pillar (대운 / 大運)
- Current luck pillar: 丁丑 Jeong-Chuk — Direct Officer (正官) over Direct Resource (正印), life stage Grave (墓), age 33–42 (6 years remaining), direction backward (역행)
- The full sequence of luck pillars and annual/monthly luck is not included in this text.

## Calculation notes
- Birth moment in UTC: 1990-05-15 01:30
- Year and Month pillars use the exact solar-term boundaries (절기) at the birth moment.
- Day and Hour pillars use true solar time at the birth place: longitude 126.978° (birth-place longitude), equation of time 3.9 min → true solar time 1990-05-15 10:01.
- Day boundary: midnight of true solar time (자정 기준); the 23:00–01:00 Rat hour belongs to the calendar day it falls on.
- Romanization follows Korean readings (Gap/Eul/Byeong… for stems, Ja/Chuk/In… for branches), not pinyin (Jia/Yi/Bing…, Zi/Chou/Yin…). The Hanja are identical in both systems.
- Chart calculated on 2026-10-01 at sajupaste.com, a free Saju (Korean Four Pillars / BaZi) calculator.

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