Mysticism June 11, 2026 2 min read

Cheongmyeong (淸明) Meaning and Customs - the 5th of the 24 Solar Terms, around April 4-6

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OIYO Research Team Contributor

Cheongmyeong (淸明) is the 5th of the 24 solar terms. It arrives around April 4-6, when the sun reaches 15° ecliptic longitude.

At a glance

CategoryDetails
Hanja淸明
Season🌱 Spring
Gregorian timingAround April 4-6
Solar ecliptic longitude15°
Saju monthly orderSolar-term boundary (節) - from this day, Jin (辰) month begins
Key themesClear sky, tree planting, ancestral grave visits

Meaning and origin

Cheongmyeong means that the sky is clear (淸) and bright (明). It refers to a spring day when the sky is considered especially clean and luminous. Because it usually falls only about one day apart from Hansik (寒食), Korea has the saying, “Whether one dies on Cheongmyeong or on Hansik,” meaning there is little practical difference between two very close things.

Customs and foods

People visited ancestral graves, paid respects, and tended the burial sites. Cheongmyeong was also regarded as one of the best times for planting trees. The seasonal force of growth was considered so strong that people said even a fire poker stuck in the ground on Cheongmyeong would sprout.

Saju and the solar terms

The calendar used in Myeongri, or Four Pillars astrology, moves by solar terms. Cheongmyeong is one of the 12 major solar-term boundaries (節), and from this day, the month pillar (月柱) in Saju changes to Jin (辰) month. This is why the sexagenary sign of the birth month is determined by solar terms, not by the lunar calendar date.

Wisdom of this season

A solar term when anything planted begins to grow - if there is a beginning you have postponed, the days around Cheongmyeong are a fitting time.

Learn more


The solar terms are a seasonal calendar that divides the sun’s path into 24 parts. This is a traditional explanation based on the climate of the Korean Peninsula, and the actual date may vary by about one day from year to year.

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OIYO Research Team

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The OIYO research team structures material from psychometric scales, statistics, and academic literature. We name both the popular framing and its scholarly limits, so each guide works as a tool for reflection rather than a verdict.