Saju (사주, “four pillars”) is the Korean system of reading a person’s character and the timing of their life from the moment they were born. It is the same family as Chinese BaZi and shares roots with Japanese Shichusuimei, but Koreans use it in their own way: less as fortune telling, more as a yearly check-in. Millions of Koreans read their saju at New Year, before a wedding, before a job change, and when a relationship gets serious. Here is what it actually is.
The four pillars and eight characters
Your birth date and time are converted into the traditional calendar, which names each year, month, day and hour with a pair of characters: a heavenly stem (천간) and an earthly branch (지지). Four pairs, eight characters, hence the other name, palja (팔자, “eight characters”). Each character belongs to one of the five elements (wood, fire, earth, metal, water) and is either yin or yang. The whole chart is a picture of which elements are strong, weak, missing or clashing in you.
The day master: the character that is you
The stem of the day pillar is called the day master (일간). It is the “you” in the chart; every other character is read in relation to it. A “yang fire” day master and a “yin water” day master are different people even if the rest of the chart is similar. Most readings begin here.
What a saju reading covers
- Temperament: how you think, decide and react, from the element balance.
- Relationships: what you need from a partner and where friction comes from.
- Work and money: the kind of work that suits you and how you handle wealth.
- Timing: the ten-year cycles (대운) and yearly luck (세운) that colour different periods of life.
- Health tendencies: traditionally, elements that are weak point to areas to look after.
What it is not
Saju does not predict specific events on specific dates. It does not say who you will marry or when you will die, and a reader who claims that is selling something. It describes tendencies and timing: “this is a year for building, not launching” rather than “you will get promoted in March.” Used that way, it works like a well-written personality profile with a calendar attached.
How Koreans actually use it
At New Year, to know what kind of year is coming. Before marriage, as a compatibility check (궁합, gunghap) that the parents often insist on. Before choosing a date for a wedding, a move or an opening (택일, taekil). When naming a baby. And, increasingly, out of curiosity about K-pop idols’ charts, which has made saju a small internet hobby outside Korea.
What you need for a reading
Your birth date, your birth time as precisely as possible, and the place (for time-zone correction). If you do not know the birth time, a reading is still possible with three pillars; it loses the hour pillar, which mostly affects children and late life. Ask a parent or check a birth certificate; many list the hour.
Trying it
SAJUBY reads charts in English from a birth date and time, with a free short reading to start and a full lifetime report as a 17-page PDF for a one-time payment. The report follows orthodox myeongri (명리) rules rather than a horoscope-style generator, and it is written to be read by someone who has never seen a chart before.
See your own four pillars
SAJUBY builds your chart from your birth date and time and reads it in plain English. Start with the free reading; the full Lifetime Saju Report is $11.99, one time.