春分日，昼夜平分是自然现象。春分这天，太阳直射地球赤道，导致全球大部分地区昼夜等长，均为12小时。从传统文化的角度，结合中医养生，日夜平分，意味着阴阳平衡，人体的气机情绪也是最平和的。
春分，作为二十四节气之一，标志着春天的中点，这一天太阳直射赤道，使得昼夜几乎等长。这不仅是一个天文学的现象，也是中国传统文化和中医养生理论中的一个重要节点。
春分还有上升的含义，整个北半球，将进入日长夜短的新阶段。
On the spring equinox, the equal division of day and night is a natural phenomenon. On the day of the spring equinox, the sun shines directly on the Earth's equator, causing most parts of the world to have equal length of day and night, each lasting 12 hours. From the perspective of traditional culture, combined with traditional Chinese medicine health preservation, day and night are evenly divided, which means a balance between yin and yang, and the body's qi and emotions are also the most peaceful.
The Spring Equinox, as one of the twenty-four solar terms, marks the midpoint of spring. On this day, the sun shines directly on the equator, making day and night almost equal in length. This is not only an astronomical phenomenon, but also an important node in traditional Chinese culture and traditional Chinese medicine health theory.
The spring equinox also has the meaning of rising, and the entire northern hemisphere will enter a new stage of long days and short nights.