UNESCO Intangible Cultural Heritage

24 Solar Terms

二十四节气

For over 2,000 years, the Chinese have divided the year into 24 segments — each marking a shift in light, climate, and life. Not a calendar of dates, but a calendar of nature itself.

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A Year in Nature's Rhythm

Each solar term marks the sun's position along the ecliptic — 15° of arc, roughly 15 days. Hover or tap to explore.

Start of Spring

立春

Feb 3–5 · Sun at 315°

Why 24?

The Solar Terms aren't just a calendar — they're a philosophy of living in conversation with the natural world.

Heaven & Humanity as One

天人合一 Tiān Rén Hé Yī

The core idea: humans are not separate from nature, but part of it. The same forces that move the seasons move within us.

Western parallel: the ancient Greek concept of "microcosm mirroring macrocosm." Modern echoes appear in chronobiology.

Yin & Yang in Motion

阴阳消长 Yīn Yáng Xiāo Zhǎng

The year is a dance of two forces. Yang (light, warmth, activity) grows from the winter solstice, peaks at summer, then yields to Yin.

Compare with the Celtic Wheel of the Year, which also tracks the tension between light and dark.

The Five Phases

五行 Wǔ Xíng

Wood, Fire, Earth, Metal, Water — not static elements, but phases of transformation. Each season corresponds to a phase.

Unlike the Greek four elements, the Wu Xing describe processes, not substances. Think of them as verbs, not nouns.

The Agricultural Constitution

农业宪法 Nóngyè Xiànfǎ

For millennia, the Solar Terms were China's farming manual. When to plant, when to harvest, when to rest the soil.

Similar to the Old Farmer's Almanac in North America — but far more systematic and older.

24 Solar Terms

From the first stirrings of spring to the deepest quiet of winter — each term tells a story of climate, culture, and cuisine.

🌱 spring
Start of Spring
立春
Lìchūn
Feb 3–5
Sun at 315°

The cycle begins. Though winter still grips the north, the first signs of stirring life appear — ice thins, willow buds swell, and the eastern wind carries a hint of warmth.

立春 Lìchūn →
🌱 spring
Rain Water
雨水
Yǔshuǐ
Feb 18–20
Sun at 330°

Rainfall increases as temperatures rise. The frozen earth softens, and the first tentative rains nourish the waking land. In southern China, the plum rain season begins.

雨水 Yǔshuǐ →
🌱 spring
Insects Awakening
惊蛰
Jīngzhé
Mar 5–7
Sun at 345°

Thunder signals the earth's full awakening. Hibernating creatures stir, and the spring equinox approaches. This is when the energy of Wood truly breaks through.

惊蛰 Jīngzhé →
🌱 spring
Spring Equinox
春分
Chūnfēn
Mar 20–22
Sun at 0°

Day and night are perfectly balanced. The sun crosses the equator heading north. In China, people fly kites, balance eggs, and celebrate the midpoint of spring.

春分 Chūnfēn →
🌱 spring
Clear & Bright
清明
Qīngmíng
Apr 4–6
Sun at 15°

The sky clears, the air freshens, and nature is at its most luminous. This is the season of remembrance — families visit ancestral graves, sweep them clean, and honor the dead.

清明 Qīngmíng →
🌱 spring
Grain Rain
谷雨
Gǔyǔ
Apr 19–21
Sun at 30°

The last spring term. Rain nourishes the grain — 'rain for the seeds.' Tea picking reaches its peak, and the peonies bloom. Summer is on its way.

谷雨 Gǔyǔ →
☀️ summer
Start of Summer
立夏
Lìxià
May 5–7
Sun at 45°

Summer arrives. The landscape transforms from spring green to deeper hues. Insects chorus, cucumbers climb, and the energy of Fire begins its ascent.

立夏 Lìxià →
☀️ summer
Grain Buds
小满
Xiǎomǎn
May 20–22
Sun at 60°

The grains are filling but not yet ripe — 'small fullness.' Rivers begin to rise, and the south enters its plum rain season. A time of patient waiting.

小满 Xiǎomǎn →
☀️ summer
Grain in Ear
芒种
Mángzhòng
Jun 5–7
Sun at 75°

The busiest time for farmers. Wheat is harvested, rice is planted. 'Grain in Ear' means the awned (bearded) grains are ready. No rest between planting and reaping.

芒种 Mángzhòng →
☀️ summer
Summer Solstice
夏至
Xiàzhì
Jun 21–22
Sun at 90°

The longest day. The sun reaches its highest point — maximum Yang energy. In Beijing, the Temple of Heaven's circular mound is designed so no shadow falls at noon on this day.

夏至 Xiàzhì →
☀️ summer
Minor Heat
小暑
Xiǎoshǔ
Jul 6–8
Sun at 105°

The heat becomes serious. 'Minor heat' is the warm-up — the real scorcher is yet to come. Thunderstorms are frequent, and the plum rain season ends in the south.

小暑 Xiǎoshǔ →
☀️ summer
Major Heat
大暑
Dàshǔ
Jul 22–24
Sun at 120°

The hottest period of the year. Fireflies dance, the lotus is in full bloom, and the earth steams. In southern China, typhoon season begins.

大暑 Dàshǔ →
🍂 autumn
Start of Autumn
立秋
Lìqiū
Aug 7–9
Sun at 135°

Autumn officially begins, though the heat lingers. The character 秋 combines 'grain' (禾) and 'fire' (火) — harvest time approaches under the last summer blaze.

立秋 Lìqiū →
🍂 autumn
End of Heat
处暑
Chǔshǔ
Aug 22–24
Sun at 150°

The heat finally retreats. Thunderstorms become less frequent, and the air takes on a crisp quality. The Chinese say: 'Summer's temper has broken.'

处暑 Chǔshǔ →
🍂 autumn
White Dew
白露
Báilù
Sep 7–9
Sun at 165°

Dew appears on the grass, white as pearls. The temperature gap between day and night widens dramatically. Autumn's beauty deepens — the sky is impossibly blue.

白露 Báilù →
🍂 autumn
Autumn Equinox
秋分
Qiūfēn
Sep 22–24
Sun at 180°

Day and night are equal again. The harvest is in full swing. In 2018, China designated Qiufen as 'Farmers' Harvest Festival' — a national holiday celebrating agriculture.

秋分 Qiūfēn →
🍂 autumn
Cold Dew
寒露
Hánlù
Oct 8–9
Sun at 195°

The dew turns cold. Autumn deepens into something more serious. The chrysanthemums bloom, and the last wild geese complete their southern migration. Frost approaches.

寒露 Hánlù →
🍂 autumn
Frost Descent
霜降
Shuāngjiàng
Oct 23–24
Sun at 210°

The first frost appears. Autumn reaches its climax — the last leaves fall, and the landscape prepares for winter. This is the 18th term, and the last of autumn.

霜降 Shuāngjiàng →
❄️ winter
Start of Winter
立冬
Lìdōng
Nov 7–8
Sun at 225°

Winter begins. The character 冬 means 'end' — the year's work is done. In ancient China, this was the time to rest, store food, and gather the family.

立冬 Lìdōng →
❄️ winter
Minor Snow
小雪
Xiǎoxuě
Nov 22–23
Sun at 240°

Light snow begins to fall in northern China. The air turns dry and cold. This is the season of preserved meats — families hang sausages and salted fish to dry.

小雪 Xiǎoxuě →
❄️ winter
Major Snow
大雪
Dàxuě
Dec 6–8
Sun at 255°

Heavy snow. The landscape is transformed. Rivers freeze in the north, and the silence of deep winter settles over the land. This is the season of storytelling by the fire.

大雪 Dàxuě →
❄️ winter
Winter Solstice
冬至
Dōngzhì
Dec 21–23
Sun at 270°

The longest night. The turning point — from this day, the light begins its slow return. In Chinese culture, this is 'the beginning of all things,' more important than New Year in ancient times.

冬至 Dōngzhì →
❄️ winter
Minor Cold
小寒
Xiǎohán
Jan 5–7
Sun at 285°

The coldest period begins — paradoxically, 'Minor Cold' is often colder than 'Major Cold.' The plum blossoms bloom in defiance of the freeze, becoming a symbol of resilience.

小寒 Xiǎohán →
❄️ winter
Major Cold
大寒
Dàhán
Jan 20–21
Sun at 300°

The coldest day. The year's cycle reaches its nadir — and its endpoint. Spring is just 15 days away. The 24th term closes the circle.

大寒 Dàhán →

Solar Terms in Modern Life

Far from a relic, the Solar Terms remain woven into daily life in China — from what people eat to how they care for their health.

🥟

Food Culture

Every solar term has its signature dish. Dumplings on the Winter Solstice, spring rolls on Start of Spring, tangyuan on the Lantern Festival. Social media has amplified this — food bloggers create elaborate "solar term meals" that go viral each fortnight.

🍵

Wellness & 养生

Traditional Chinese Medicine ties each solar term to specific organs, diets, and routines. "Yangsheng" (养生, nourishing life) has become a mainstream wellness trend among young Chinese — and increasingly, international practitioners are taking note.

📱

Digital Revival

Apps remind users of each solar term with beautiful graphics and health tips. WeChat mini-programs offer personalized guides. The Chinese government has designated Solar Terms as a national holiday framework, and UNESCO recognized them in 2016.