SAJULY

사주 · Four Pillars of Destiny

Discover your Saju — the 1,000-year-old Korean birth chart

Before horoscope apps, Koreans read the four pillars of a birth moment — year, month, day, and hour. Sajuly computes yours precisely and reads it beautifully.

Hour
Mu-Sul
Day
Byeong-Jin
Month
Mu-In
Year
Eul-Mi

A real chart, computed by the Sajuly engine.

Why not just ask a chatbot?

Chatbots guess. We calculate.

Large language models routinely hallucinate the pillars — wrong day stem, wrong solar-term month. Sajuly's calculation engine is deterministic code, verified against published charts, with the year boundary at Ipchun and months set by solar terms.

Made to be shared.

Your result becomes a share card designed for TikTok and Instagram — your hanja pillars, your element, your sign. Your friends will ask where it's from.

K-wave native.

This is the fortune-telling system Koreans actually use — the one behind the saju cafés in Seoul and the K-drama plotlines. Not a western zodiac with a coat of paint.

How it works

01

Enter your birth moment

Date, time if you know it (no stress if you don't), and an optional question on your mind.

02

We compute your pillars

A deterministic manseryeok (만세력) engine derives your four pillars from solar terms and the 60-cycle calendar — the same math Korean fortune tellers use. No guessing, ever.

03

Read your chart, share your card

Get a warm, specific reading of your elements and day master — plus a gorgeous card made for your stories.

Early readers say

I've taken every personality quiz on the internet. This is the first one that felt like it was actually about *me*.
Beta reader, Berlin
My halmoni used to take me to a saju café in Seoul. This is that feeling, in English, on my phone.
Beta reader, Los Angeles
ChatGPT gave me three different charts for the same birthday. Sajuly gave me one — the right one.
Beta reader, London

Quotes from private beta feedback. Public reviews coming soon.

Your chart has been waiting for 1026+ years.

The basic reading is free, forever. Deep readings and compatibility are on the way.

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