The 24 Solar Terms, also known as the Chinese Solar Calendar, is a traditional system that divides the year into 24 periods, each approximately 15 days long. These periods are based on the Earth’s position relative to the Sun and are used to guide agricultural activities, seasonal customs, and everyday life. In this article, we will explore the 24 Solar Terms through a day-by-day English narration, highlighting the unique characteristics and cultural significance of each period.
1. The Beginning of Spring (Chūnjié)
The first Solar Term marks the beginning of spring. Days become longer and temperatures start to rise. People celebrate this with the Dragon Boat Festival, which honors the poet Qu Yuan.
Day 1: The Sun reaches the celestial longitude of 0°, signaling the start of spring. Farmers begin preparing their fields for planting.
Day 15: The first day of the Dragon Boat Festival. People gather to eat zongzi (sticky rice dumplings) and participate in dragon boat races.
2. The Awakening of Insects (Chúxī)
As the weather warms, insects begin to stir. It’s a time for planting and nurturing crops.
Day 16: The Sun reaches the celestial longitude of 15°. Farmers start sowing seeds for wheat and barley.
Day 30: The peak of Chúxī. Insects are said to be most active, and farmers continue their planting activities.
3. The Grains Begin to Ripen (Lìxiāo)
The grains start to mature, and farmers begin harvesting the early crops.
Day 31: The Sun reaches the celestial longitude of 30°. The first grains are harvested, and people celebrate with a festival known as the Grain Harvesting Festival.
Day 45: The peak of Lìxiāo. Farmers continue to harvest their crops, preparing for the winter.
4. Summer Solstice (Xiàzhì)
The longest day of the year, with the Sun at its northernmost point. It’s a time for celebration and relaxation.
Day 46: The Sun reaches the celestial longitude of 45°. It’s the summer solstice, and people celebrate with festivals and outdoor activities.
Day 60: The day after the summer solstice. The Sun starts moving southward, and temperatures begin to drop slightly.
5. The Heat of the Summer (Shǎoshuǐ)
The hottest part of the summer begins, with high temperatures and humidity.
Day 61: The Sun reaches the celestial longitude of 60°. People seek shade and drink plenty of water to stay cool.
Day 75: The peak of Shǎoshuǐ. The weather is extremely hot, and farmers continue to harvest their crops.
6. The End of Heat (Mùdān)
The heat starts to subside, and the weather becomes more pleasant.
Day 76: The Sun reaches the celestial longitude of 75°. People start to enjoy the cooler weather and longer days.
Day 90: The peak of Mùdān. The weather is mild, and farmers continue to harvest their crops.
7. The Autumn Equinox (Qiūjié)
The day and night are of equal length, marking the beginning of autumn.
Day 91: The Sun reaches the celestial longitude of 90°. It’s the autumn equinox, and people celebrate with festivals and outdoor activities.
Day 105: The day after the autumn equinox. The weather starts to cool, and people begin to wear warmer clothing.
8. The Cold Dew (Hángèng)
The temperature drops, and dew forms on the ground in the early morning.
Day 106: The Sun reaches the celestial longitude of 105°. The weather becomes cooler, and people start to prepare for winter.
Day 120: The peak of Hángèng. The temperature is significantly lower, and people begin to wear heavy winter clothing.
9. The Frost Descent (Shuāngjié)
Frost begins to form on the ground, signaling the approach of winter.
Day 121: The Sun reaches the celestial longitude of 120°. The weather is cold, and people continue to wear heavy winter clothing.
Day 135: The peak of Shuāngjié. The temperature is very low, and people enjoy the beauty of winter landscapes.
10. The Great Cold (Dàhéng)
The coldest part of the year begins, with temperatures dropping significantly.
Day 136: The Sun reaches the celestial longitude of 135°. It’s the great cold, and people stay indoors to avoid the cold weather.
Day 150: The day after the great cold. The temperature starts to rise slightly, and people begin to prepare for spring.
11. The Winter Solstice (Dōngzhì)
The shortest day of the year, with the Sun at its southernmost point. It’s a time for celebration and preparation for the new year.
Day 151: The Sun reaches the celestial longitude of 150°. It’s the winter solstice, and people celebrate with festivals and outdoor activities.
Day 165: The day after the winter solstice. The Sun starts moving northward, and temperatures begin to rise slightly.
12. The Cold Storage (Liangmǎo)
The coldest part of the year continues, with temperatures remaining low.
Day 166: The Sun reaches the celestial longitude of 165°. It’s the cold storage, and people continue to stay indoors.
Day 180: The peak of Liangmǎo. The temperature is very low, and people enjoy the beauty of winter landscapes.
As we have explored the 24 Solar Terms, we can see how they play a significant role in Chinese culture and everyday life. Each period has its unique characteristics and traditions, making the Chinese calendar a rich and fascinating system.