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Nine Star Ki Fortune Calculator

KYUSEI KIGAKU FORTUNE CALCULATOR

What is Nine Star Ki?

Nine Star Ki (Kyusei Kigaku) is a system of destiny study built up in Japan from the I Ching, one of the Confucian classics, together with the older East Asian thinking on yin-yang and the Five Elements. Its distinguishing feature is that a person's Principal Star and the turning of their fortune can both be derived from a date of birth and a calendar by a fixed set of rules. For centuries it has been used across East Asia to choose the timing and the direction for starting something. Less a fortune-telling than an algorithm for fortune: it reads your character and the wave of your fortune by calculation, starting from your birthday.

Fortune Calculator

Your Principal Star, calculated from your date of birth. The Nine Star Ki algorithm then shows today's fortune and your compatibility.

What you enter is stored only in your own browser.
Nothing is sent to a server or shared with anyone else.

How to use it

1
Enter your date of birth Just pick the year, month and day. You don't need to know your Principal Star.
2
Your Principal Star is calculated The Nine Star Ki algorithm works out your Principal Star instantly.
3
See your fortune and compatibility Today's, this month's and this year's fortune biorhythm, plus how you match with someone else.

What this calculator shows you

  • Your Principal Star and characterIt derives your Principal Star from your date of birth and shows the temperament and the fields said to suit it.
  • Fortune biorhythmToday's, this month's and this year's wave of fortune, scored from the year, month and day charts and drawn as a graph.
  • CompatibilityHow you match with someone, read from the generating and controlling cycles of the Five Elements.
  • Comparing two biorhythmsYour fortune and theirs side by side, so you can see whose day is rising and whose is dipping.
  • Good days to actIt picks out the coming days that favour action and the ones to hold back on.
  • The reasoning behind the resultWhy this result — explained from the symbolic meaning of the I Ching. Not a guess, but a stated reason.

The nine stars

In Nine Star Ki, your year of birth (among other things) fixes which of the nine stars is your "Principal Star".

  • One White Water StarWaterA flexible, patient intellect with cool judgement.
  • Two Black Earth StarEarthA generous, hard-working type — the one who holds things up from below.
  • Three Jade Wood StarWoodAn energetic pioneer, rich in drive and ideas.
  • Four Green Wood StarWoodSociable, and a keeper of connections — a harmoniser.
  • Five Yellow Earth StarEarthStrong command; the leader among the nine stars.
  • Six White Metal StarMetalNoble and perfectionist — a capable person with high ideals.
  • Seven Red Metal StarMetalBright company who knows how to entertain.
  • Eight White Earth StarEarthA tenacious reformer with unshakeable conviction.
  • Nine Purple Fire StarFirePassion and an eye for beauty — someone who draws attention.

Where it comes from, and how it works

Nine Star Ki traces back to the I Ching, to yin-yang and Five-Element thought, and to the magic square known as the Luo Shu, in which every row, column and diagonal sums to fifteen. Mapping the nine stars, the eight trigrams and the compass directions onto that arrangement of numbers is the skeleton of the system.

It was codified in Japan as its own system of destiny study in the Taisho era. Once the date of birth and the calendar are fixed — a calendar of the nine stars that begins at Risshun — the Principal Star, and which "palace" it occupies in a given year, month and day, all follow from a fixed set of rules.

That calendar is based on the twenty-four solar terms, which track the sun. So the year begins at Risshun (around 4 February), and each month begins at its own solar term rather than on the first of the calendar month. Your monthly fortune therefore turns over at the solar term, not on the 1st.

Nine Star Ki is not a prophecy to be scored right or wrong; it is a system with regularities. That is exactly why a calculator can take your birthday and derive your character and the wave of your fortune automatically.

Frequently asked questions

How is Nine Star Ki different from fortune-telling?
Nine Star Ki is a regular system that derives the tendency of your fortune from a date of birth and a calendar by fixed rules. Fortune — something like your condition or your drive — has a rhythm to it, and this tool shows that rhythm as a daily biorhythm. Is today a day to move, or a day to hold back? It gives you a way to judge timing.
How is my Principal Star decided?
From your year of birth. Nine Star Ki puts the boundary of the year at Risshun (early February), so anyone born between New Year and the day before Risshun is treated as belonging to the previous year's star. The app applies that correction automatically.
Can I use it without knowing my Principal Star?
Yes. Enter your date of birth and the Principal Star is calculated for you. If you already know your star, you can pick it directly from the "By star" tab.
Does the daily fortune change every day?
Yes. The daily reading changes with the turning of the day chart. Today's, this month's and this year's fortune are all shown as biorhythms, so you can check the wave each day.
When does the fortune change over? Why does the month look out of step with the calendar?
Nine Star Ki uses a calendar based on the twenty-four solar terms, which follow the sun. The year begins at Risshun (around 4 February), and each month begins at its own solar term. Because the change happens at the solar term rather than on the 1st, in June — for example — the reading stays on the previous month until Boshu (around 6 June).
Do I need to enter my time of birth or my gender?
No. Only the date of birth is used to derive the Principal Star and the fortune.
Is the result accurate? What is it based on?
Nine Star Ki is not a guessing game. It takes the rhythms of nature that the I Ching has long read, and applies them to a person's fortune. Just as a field is better sown in spring than in winter, people too go through a turning of seasons — preparing, setting out, bearing fruit, resting. This app shows you where in that wave you stand now, and why (the symbolic meaning behind it), so it works as a guide to what to do now rather than a prediction of the future.
Is it free? Do I need an account?
It is free, and no installation or sign-up is needed. What you enter is stored only in your own browser; nothing is sent to a server or shared with anyone else.

Now find your Principal Star and today's fortune.