Nine Star Ki
Find your main star (one of nine) by your birth year and explore your innate temperament and flow.
Nine Star Ki is an East Asian astrology that sorts your birth year into nine stars (One White Water Star to Nine Purple Fire Star) to read your innate temperament and flow. The nine stars assign the nine palaces of the Luoshu magic square to the energies of the sky. Read as directions those same nine cells give the Kua number of feng shui; read as the energy of a year they give Nine Star Ki. Each star moves through the palaces in a fixed order and returns to its own after nine years, which is why people who share a main star are nine years apart.
How it works
Enter your birth date and your main star is worked out for you. Nine Star Ki treats the start of spring in early February as the turn of the year, so earlier birthdays count as the previous year.
What you'll get
First it names in one line which of the nine stars you sit under and the element of that seat; below that come your born temperament, love and the line of work that suits you, money and health, and the flow of this year. It does not fix a direction for you or pick a moving date.
What the nine-year return means
The nine stars move to a set position each year, and after nine years they come back to where they started. So a person born under your star is nine years older or younger, and your own flow runs in a nine-year turn. When you read the outlook for this year, reckoning at the same time where in that turn you now stand makes it natural to see that busy years and quiet ones come round in alternation.
The fifth star sits at the centre and has no direction
The fifth star, which sits at the middle of the nine squares, does not hold a compass direction as the other eight do. That is why feng shui, which reads the same nine squares as directions, cannot use the fifth as it stands and substitutes the second for men and the eighth for women. Nine-star astrology, which reads them instead as the energy of a year, leaves the fifth at the centre as it is. Where results from the two look different despite the same source, this is usually the point where they part.
There are month stars and day stars as well
Beyond the birth star settled by the year, some branches of this tradition also read a month star settled by the month of birth and a day star settled by the day. If the birth star is the groundwork, the month star sits closer to the grain of disposition and the day star to the energy of a particular day. This page handles only the birth star, so it sees at that scale. If the reading is broadly right while the details miss, the other two stars may be telling another story.
Why the year turns at the start of spring
Cutting years and months by the solar terms is not peculiar to this tradition but the general practice across Chinese astrology, Saju included. The point where the days begin to lengthen was taken as the opening of the year, and reckoning the first of January as the first day of the year settled in much later. So for anyone born before early February, the calendar year and the star year differ. That is not an error but a different starting line.
Do not choose people by their star
A star comes round once every nine years, so hundreds of millions of people share yours. That many cannot possibly suit one person alike. We would not suggest calling off a meeting or being reluctant to work with someone because the stars are said not to match. If you are already close, using it to know in advance where the two of you run at different speeds suits this reading better than settling anything with it.
Frequently Asked Questions
Why is a birthday in early February counted as the previous year?
Nine Star Ki treats the start of spring, not January 1, as the turn of the year, so the star changes at that boundary.
Is this the same as the five elements in Saju?
The elements are the same idea, but the method differs. Saju reads all eight characters, while Nine Star Ki works from the star set by your birth year.
How is my star number decided?
The digits of your birth year are summed and reduced, and that value is subtracted from nine. The star moves back by one each year, so the same star returns every nine years.
Why are the month and day not used?
What matters is the year, not the month or day. But the year boundary falls at the start of spring, so a birthday before early February counts as the previous year — which is why the full date is asked for.
Does a lunar birthday change my star?
Choose lunar and the date is converted to solar before anything is worked out. The result only diverges for birthdays between late December and January; in every other month both settings give the same star. If yours falls in that stretch, enter it both ways and compare.