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Annual cultural reference · Nine complete guides, free
Find a conditional Nine Star Ki year label from a Gregorian year and its Beginning of Spring boundary. Explore nine cultural guides, with both labels retained when timing is uncertain.
Nine Star Ki uses nine inherited number, colour and phase labels. This tool follows one annual convention: the season changes at Beginning of Spring. It shows that boundary in Japanese Standard Time and asks you to choose a side explicitly. The nine guides explain cultural images and original everyday examples; they remain open without entering a year.
Enter a Gregorian year, then compare the birth moment with the displayed Beginning of Spring boundary in Japanese Standard Time (UTC+09:00). Select a side only if you can place that moment clearly before or after it; otherwise keep both possibilities. The displayed time is rounded to a minute, so a birth within that minute remains uncertain. This calculates one traditional year-star reference, not a complete birth chart or a measured personality.
Only a Gregorian year from 1900–2026 and a boundary side are needed. No full birth date, birth time, time zone, name, sex or location is collected. Input stays in this page’s memory; clearing, reloading, leaving or changing language removes it.
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Before the displayed Beginning of Spring boundary, use the previous Gregorian year as the season year; clearly after it, use the entered year. The traditional anchor is 1927 = One White and 1928 = Nine Purple. The modular rule is ((1927 − season year) mod 9 + 9) mod 9 + 1. It labels the selected season; it does not determine when a birth happened.
The 1900–2026 boundaries are literal Beginning of Spring rows from the National Astronomical Observatory of Japan calculation service, using its current-theory 2.1i option, default ΔT and JST (UTC+09:00), with no daylight-saving correction. The stored values are displayed to a minute. They do not silently adopt the birth location’s time zone or replace the boundary with February 4 or Lunar New Year.
If the birthday, birth time, time zone or comparison with JST is unknown, choose “Uncertain”. A birth within the displayed boundary minute is also uncertain. The result retains both the previous-season and current-season labels, with both complete guides. They are two conditional possibilities, without a probability, tie-break or preferred label.
This is an annual cultural reference, without month, day, hour or third-star calculations, gender formulas, auspicious directions, compatibility, health or future predictions. Astronomy supplies the seasonal boundary; it does not validate personality claims. Only the year and boundary side enter this page’s memory. Editing invalidates the old result. Clearing, reloading, leaving or changing language removes the inputs; they are not stored as a draft or placed in a public URL. Copying shares only a public guide title and URL.
Water channels in the Kan symbol
One White Water joins the number 1, a traditional colour-name and the Water phase. Sonoda’s Later Heaven diagram pairs it with Kan, the water trigram. The classical commentary discusses water, channels and concealed flow; its image of a hollow or difficulty is part of an old symbolic vocabulary. It does not report anything observed about a person born in a particular year.
Kun, the ground image and shared support
Two Black Earth combines the number 2, the name Black and the Earth phase. Sonoda’s Later Heaven diagram pairs it with Kun. The classical text associates Kun with earth, receiving and carrying; the commentary expands the image through what can hold or bear things. These are inherited cultural correspondences, not evidence that a birth year gives someone a caring occupation or a duty to serve.
Zhen, thunder and a visible beginning
Three Jade Wood combines the number 3, the inherited blue-green colour-name and the Wood phase. In Sonoda’s Later Heaven diagram it is paired with Zhen. The classical text uses thunder and movement for Zhen; its commentary also describes spring vegetation emerging. These images belong to the tradition’s vocabulary of beginning and motion, not a measurement of your energy or temperament.
Xun, wind and how an idea reaches others
Four Green Wood combines the number 4, the inherited Green name and the Wood phase. Sonoda’s Later Heaven diagram pairs it with Xun. The classical text associates Xun with wind, wood and entry. That vocabulary gives the cultural label an image distinct from Three’s thunder. It does not demonstrate that a person is naturally diplomatic, indecisive or skilled at persuasion.
The central Earth position and its limits
Five Yellow Earth combines the number 5, the Yellow name and the Earth phase. In Sonoda’s Later Heaven diagram it occupies the centre while eight trigrams surround it. The visible source does not supply a separate ninth trigram for Five. Its distinct cultural feature here is a place in the scheme, not a measured central role in someone’s family or workplace.
Qian, heaven and a standard that serves a task
Six White Metal combines the number 6, the White name and the Metal phase. Sonoda’s Later Heaven diagram pairs it with Qian. The classical text associates Qian with heaven and continuing strength or activity. This is an inherited symbolic correspondence, not a measurement of leadership, reliability or social rank among people born in the same year.
Dui, the lake image and room for enjoyment
Seven Red Metal combines the number 7, the Red name and the Metal phase. Sonoda’s Later Heaven diagram pairs it with Dui. The classical text connects Dui with a lake or marsh and with delight; later in the same chapter it includes speech among its images. Those are cultural associations, not proof of charm, sociability or an easy life.
Gen, the mountain and a purposeful pause
Eight White Earth combines the number 8, the White name and the Earth phase. Sonoda’s Later Heaven diagram pairs it with Gen. The classical text uses mountain and stopping for Gen, and discusses endings and beginnings elsewhere in the chapter. This cultural vocabulary does not measure a person’s patience, resistance to change or ability to keep a secret.
Li, fire and what a demonstration reveals
Nine Purple Fire combines the number 9, the Purple name and the Fire phase. Sonoda’s Later Heaven diagram pairs it with Li. The classical text relates Li to fire and the sun; its explanation of attachment concerns how fire rests on something. These are inherited images of the trigram, not observations that someone is dramatic, attractive or intellectually gifted.
It is a conditional annual cultural reference. It does not measure traits or calculate a full birth chart. The nine cultural guides are available to everyone, regardless of the label returned.
The selected convention changes season at the actual Beginning of Spring boundary. A Gregorian year alone cannot distinguish the two sides. If you cannot compare the birth moment with the displayed JST boundary, keep both possibilities.
The moment could belong to the previous or current season year. Both adjacent labels and both full guides remain visible; the tool does not guess a time zone or force a single result.
The verified boundary table here covers 1900–2026 only. Other years are unavailable, including future years. A before-boundary input in 1900 can refer to the 1899 season under the same modular rule.
The historical diagrams and classical commentary supply cultural images. FermatMind wrote the everyday examples and optional reflection questions. A year label does not establish your personality, responsibilities, abilities or future.
Only year and boundary side are used in this page’s memory. There is no date, time, name, sex, location or account field. Reloading or clearing removes the input. Public sharing contains a guide title and URL, without personal inputs or calculations.