Korean Saju Calculator
In Korea, your birth moment is written as eight characters — your saju palja. Enter your birth date, time and city to get your free Saju chart in English: the eight characters, your Day Master, five elements and Ten Gods, written the old way on a talisman with the precision of a modern almanac.
GYEONG · YANG METAL
Example chart · born July 4, 1990, 9:20 am in New York
Your Five Elements
Counted from your eight visible characters. No Wood appears — a theme to reflect on, not a lack.
庚 Gyeong Metal, the uncut blade
Gyeong is metal before the smith touches it — ore in the mountain, an axe still unsharpened. It is the most straightforward of the ten Day Masters: it says what it means and keeps its word.
Three Fire characters surround you. In Korean Saju, Fire is what tempers Metal — structure and responsibility that refine rather than break.
Gyeong likes fairness and fast decisions, and can be blunt on the way there.
Read the full Yang Metal (Gyeong) Day Master guide → · Your Geng Wu day pillar →
For entertainment and self-reflection only. Saju describes tendencies, not fixed outcomes.
庚午 Geng Wu — a blade glowing in a summer forge
Geng Wu places raw Yang Metal on the Horse, the hottest Fire branch of midsummer. The picture is iron glowing in a forge, being shaped into something precise and strong.
Gyeongo (경오) is the Korean name, and a blade glowing in a summer forge is the classic picture. Gyeongo people are described as principled, dynamic and quick to take responsibility. They hold themselves to high standards and keep promises carefully. The Horse branch brings speed and charm, so they are good company and quick on their feet. They also care how they are seen, and public respect matters to them. Under pressure they sharpen instead of breaking, which makes them steady allies when things get difficult.
- Integrity — Gyeongo keeps its word and holds itself to the standards it expects of others.
- Grace under pressure — like tempered steel, it grows stronger when tested by hard situations.
- Lively charm — the Horse branch adds warmth and quick humor to a disciplined nature.
Your day pillar is your Day Master plus the branch beneath it — sixty kinds in all. For entertainment and self-reflection only.
How we got your chart
- 1Clock time in New York City09:20 EDT
- 2Daylight saving was on (60 min)clock − 60 min
- 3Same moment in universal time (clock was UTC−4)Jul 4, 1990 13:20 UTC
- 4Longitude 74.01°W → local solar time08:23
- 5Hour branch (07:00–09:00)辰 Dragon
- 6Solar month: Grain in Ear (芒種) beganJun 5, 1990, 6:46 PM EDT
- 7Korean lunar date1990-05-12 (leap month)
Ten Gods and hidden stems
| Year | Month | Day | Hour | |
|---|---|---|---|---|
| Heavenly Stem | 庚Gyeong | 壬Im | 庚Gyeong | 庚Gyeong |
| Ten God | Friend比肩 비견 | Eating God食神 식신 | Day Masteryou | Friend比肩 비견 |
| Earthly Branch | 午OHorse | 午OHorse | 午OHorse | 辰JinDragon |
| Hidden stems | 丙 己 丁 | 丙 己 丁 | 丙 己 丁 | 乙 癸 戊 |
| Ten God of main hidden stem | Direct Officer正官 정관 | Direct Officer正官 정관 | Direct Officer正官 정관 | Indirect Resource偏印 편인 |
Every character is named by how its element relates to your Day Master — the Ten Gods (십신 sipsin, 十神). Each branch also stores one to three hidden stems (지장간 jijanggan); the last one listed is the main one, and its Ten God is shown under the branch.
More from your chart
- Day Master strengthBalanced (40/100) · useful: Earth, Metal
- Symbolic starsnone of the five main stars
- Clashes & combinations0 harmony · 1 tension
- Spouse palaceHorse 午
Each link opens the same chart in a dedicated tool. For entertainment and self-reflection only.
Get your week as your Day Master, free
Each Monday: this week’s seven day pillars read for your Day Master — the best day and the go-gently day. One short email a week, for reflection and entertainment.
The Ten Heavenly Stems
The Twelve Earthly Branches
Your year animal: Horse 午 · day animal: Horse 午 · hour animal: Dragon 辰
What is a Saju calculator?
Saju (사주, “four pillars”) is the Korean name for the Four Pillars of Destiny. A Saju calculator turns your birth moment into eight characters — saju palja (사주팔자) — a Heavenly Stem and an Earthly Branch for your year, month, day and hour.
What does this Saju calculator show?
Your full Saju chart: the four pillars, your Day Master (the stem of your day pillar) with a short reading, your day pillar reading, the balance of the five elements, and the Ten Gods with the hidden stems inside each branch. It also shows how your birth time was corrected, so you can check every step.
How do I use this Saju calculator?
Enter your date of birth (tick “This is a Korean lunar date” if your family keeps a lunar birthday), your time of birth and the city where you were born, then press Write my Saju. We look up the time zone and any daylight saving in force in that city on that date, turn your clock time into local solar time and write your four pillars. If you don’t know your birth time, tick “I don’t know” and you still get three pillars and your Day Master.
How do I read my Saju chart?
Go in five steps. First, find your Day Master, the top character of your day pillar: that is “you” in the chart. Second, read your day pillar; the branch under your Day Master is your spouse palace, and the 60 day pillars guide has a page for each one. Third, count the five elements to see what is plentiful and what is missing. Fourth, look at the Ten Gods, which name how every other character relates to your Day Master. Fifth, check your luck pillars, the ten-year seasons your chart moves through. Read it as a mirror for reflection, not a verdict.
Can you show an example Saju chart?
Someone born on March 15, 1995 at 2:30 pm in Seoul has the pillars 乙亥 (year), 己卯 (month), 乙巳 (day) and 癸未 (hour). Seoul lies about 32 minutes west of its time-zone meridian, so the clock time becomes 1:57 pm solar time, still the hour of the Goat (未, 1–3 pm). The Day Master is 乙 Yin Wood, and the eight characters count Wood 3, Earth 2, Water 2, Fire 1 and Metal 0: a Wood-heavy chart with no Metal. For a Wood Day Master, Metal is the Officer group of the Ten Gods (the stars of rules and outside pressure), so a reader would start by asking where this person finds structure. More on this day in the 乙巳 day pillar guide.
Is this Saju calculator free?
Yes. The chart and every reading on this page are free, with no sign-up, and your chart is calculated in your browser. If you want more, an optional Complete Reading (US$14.99) goes chapter by chapter through your chart.
Why does my birth city change my Saju?
The pillars follow the sun, not your clock. Daylight saving, historic time-zone changes and your distance from the time-zone meridian can move your real solar time by an hour or more. That can change your hour pillar — and near midnight, your day pillar. Most calculators ask you to tick a daylight-saving box; we look it up for your city and date automatically.
Is Korean Saju the same as Chinese Bazi?
The calculation is the same eight characters. Korean practice corrects the birth time for longitude by default and reads the chart with Korean terms and emphasis. See Saju vs Bazi for the details.
What if I don’t know my birth time?
You still get three pillars — year, month and day — including your Day Master, the heart of the reading. Only the hour pillar needs the time.
Which calendar does this calculator use?
The year starts at Ipchun (立春, Start of Spring) and each month starts at one of the twelve solar terms, computed from VSOP87 planetary theory. You can also enter a Korean lunar date.
Sources: solar terms computed with VSOP87 (Bretagnon & Francou) via Meeus, Astronomical Algorithms; time-zone history from the IANA tz database; Korean lunar calendar data from the Korea Astronomy and Space Science Institute; cities from GeoNames. Cross-checked against an independent almanac library (1,812 solar terms within 1 minute). Checked October 7, 2026.