Preview version. The stars, boards and direction readings from your date of birth come from the calculation engine. Parts marked “Sample” are placeholder text
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Nine Star Ki | Following the original books of its founder, Sonoda Shinjirō

Just enter your date of birth.
Your star, and this month's good directions.

A reading that explains, clearly and in detail, the three original books of Sonoda Shinjirō, the founder of Nine Star Ki. You read the results in plain words, and the reasons with the page of the original.

  • Free
  • No sign-up
  • Date of birth only

The chart has the shape of the direction board in the original: north, south, east and west are 30° each, and the four corners between them are 60° each. The widths differ from the common board of 45° each.

Date of birth

From the Start of Spring, 1984 is a Yang Wood Rat year

The free calculation runs only on this device. Your date of birth is not sent anywhere.

Born around February 4 or at the turn of a month? Adding the time makes it more accurate

The original divides the year not on January 1 but at “the time of the Start of Spring.” Stated in the original

Your stars, the boards and the original text behind each reason are free. The calendar for later months and the detailed chapters are for members, at ¥480/month (tax included).

New to Nine Star Ki?

It can help when:

  • you are thinking about which direction to move or travel
  • you want to choose a month to start something new
  • you want to know your own star (the star of your birth)
  1. Choose your date of birthNo name or sign-up needed. The date you enter never leaves this device.
  2. Press the buttonYour star and this month's good directions appear right away.
  3. Read it in plain wordsWe explain what the directions mean and offer advice for you right now. Tap to open the page and text of the original.
What is Nine Star Ki?

A form of divination that looks at good directions and timing through nine stars (from the One White Water Star to the Nine Purple Fire Star), set by the year and month you were born. Sonoda Shinjirō put it together in 1924. This site reads the three books he wrote himself.

Enter your date of birth

This changes every day

Today's calendar

  • DaySix White Metal Star Yin Metal Rabbit day
  • MonthEight White Earth Star Yin Earth Boar monthuntil Major Snow on 12/7
  • YearOne White Water Star Yang Fire Horse yearuntil the Start of Spring on 2027/2/4
24 days leftThe month board changes (at Major Snow, 12/7 11:52). This month's good directions last until then.
12/16…

Derived from the original Calculated by the rule of Eto Kyūsei Urū Kaisetsu, original p. 29

Whatever your birth year

This month, 3 directions are best avoided by everyone

  • 5Southwest Five Yellow Killing
  • DNortheast Dark Sword Killing
  • BSoutheast Month Breaker

These three are set regardless of birth year. Your own good directions depend on the stars of the year and month you were born, and differ from person to person.

Enter your date of birth to see your good directions

With two dates of birth

Your two stars as a pair

We look up two people's birth stars in both directions in the Nine Star generating-and-overcoming table of Kaisei Hōi Meikan. The original says nothing about compatibility between people, so we state clearly that this site has applied a table of directions to two people.

See your two stars as a pairFree · no sign-up · no names needed

How this differs from the Nine Star Ki you usually see

Open the original, and you find three differences

Methods vary between schools and books. Here we show, with page numbers, what the founder's original books teach.

1You use more than the one star of your birth year

OriginalIt teaches that from age 20 you look at two stars together: the “year” star and the “month” star.
「二十歲以上は、年月の本命二星を以て吉方を併用す。」Kaisei Hōi Meikan, original p. 9 (“From age 20, use the two birth stars of year and month together for lucky directions.”)

2The eight directions are not the same width

OriginalNorth, south, east and west are 30° each; the four corners between them are 60° each.
「四正は各三十度。四隅は各六十度であつて、斯く定めて適用すると凡ての作用がよく符合するのである。」Kaisei Hōi Meikan, original p. 4 (“The four cardinal directions are 30° each and the four corners 60° each; set this way and applied, every effect matches well.”)

3The month and year matter more than “today's lucky direction”

OriginalIt teaches that the weight grows from day to month to year.
「日よりは月の吉方が貴く、月よりは年の吉方が重且つ大である」Kaisei Hōi Meikan, original p. 10 (“A lucky direction of the month is worth more than one of the day, and a lucky direction of the year is weightier and greater than one of the month.”)
Read about the differences (to the page on the original)

Based on three books the founder wrote himself

Hōi Meikan

Kaisei Hōi Meikan

4th edition, 1934 | the luck of directions; 180 year boards and 36 month boards

Urū Kaisetsu

Eto Kyūsei Urū Kaisetsu

1930 | the star of each day and the rules for its switch days

Unsei Hiroku

Unsei Hiroku, 1934 edition

1934 | how fortunes are written for each star and each month

All three are public in the National Diet Library Digital Collections, so anyone can check the images of the originals. Where the original sets nothing, we add nothing and show Not in the original. Where we fill in with modern calculation, such as the calendar (dates and times of the solar terms), we say so clearly too.

About the original and Sonoda Shinjirō

What you can see for free

Free, no sign-up
  • Your birth-year star and birth-month star
  • This year's, this month's and today's boards, with the luck of the eight directions
  • The reasons for each reading, with the page and text of the original
  • The day stars for the next 7 days
More with membership (¥480/month, tax included)
  • Lucky direction calendardates for moves and trips, months ahead
  • Detailed chaptershow to spend this month, how to plan a temporary stay, your family's stars
About pricing and membership
Enter your date of birthFree · no sign-up