The formula for solar day and lunar day

The formula for the sun day and the lunar day

The sun rises step by step, and the sun is bright; the lunar day rises, sneaking and soaking, and it is rainy. This is an astronomical law summarized by ancient Chinese people. It is not only an observation summary of the operation of nature, but also a cognitive summary of the laws of human life. Although the solar day and the lunar day have some similarities, they are actually two completely different weather phenomena. This article will introduce the formation, regularity and impact of the solar day and the lunar day on human health from a scientific perspective.

The formation and rules of the solar day

The solar day refers to the time interval when the sun crosses the prime meridian once. It is also a commonly used time calculation method in daily life. The sun rises from the east, reaches midday in the morning, and sets from noon to the west in the afternoon. The length of a solar day differs from that of a calendar day, with the average length of a solar day being 24 hours and 4 minutes. The length of the solar day changes with the Earth's rotation and revolution periods, so the length of the solar day is not exactly the same every year.

The formation and rules of the lunar day

The lunar day refers to the time it takes for the moon to orbit the earth, which is the length of 29.5 days and nights. The length of the lunar day is due to the fact that the long axis of the moon's orbit around the earth is slightly deviated from the earth's equatorial plane. In addition, the earth's rotation has rhythm, so the length of the lunar day is not exactly the same every year. The length of a lunar day is about 50 minutes longer than a solar day.

The impact of solar day and lunar day on human health

Solar day and lunar day have different effects on human health. The solar day is full of energy and makes people excited, while the lunar day is Makes the body weak and susceptible. The sun is full of sunshine, which is suitable for outdoor activities. During exercise, the body can quickly convert it into energy, making people feel comfortable and energetic. On the lunar day, the air pressure is low, the humidity is high, and the energy is insufficient, which can easily cause symptoms such as physical weakness, fatigue, gastrointestinal discomfort, and mental depression. Especially for some people who are prone to depression or unstable moods, the impact of lunar weather on their mood will be more obvious.

In short, the laws of solar and lunar days have an extremely important impact on human life. Reasonable use of weather patterns can not only effectively prevent some diseases, but also improve the quality of life and physical health. Therefore, we should reasonably adjust our lifestyle according to different weather patterns.