How to write twenty-four solar terms?

Beginning of spring: February 4th or 5th is the solar term in beginning of spring every year.

Rain: February 19 or 20 Every winter comes and spring comes, the temperature starts to rise and the air humidity keeps increasing, but the cold air activity is still very frequent.

Sting: March 5 or 6 every year means that hibernating creatures in hibernating soil start to move in winter. It was cold and warm before and after the shock, and the temperature and wind changed greatly.

Vernal equinox: On March 20th or 2 1 day every year, the sun shines directly on the equator, and day and night are almost equal. Overwintering crops in vast areas of China will enter the spring growth stage.

Qingming: On April 4th or 5th every year, the temperature rises and the weather gets warmer.

Grain Rain: On April 20th or 2 1 every year, the rainfall increases, which is beneficial to grain growth.

Hot summer: On August 23rd or 24th every year, "hot summer" means the end. By the end of the summer heat, the weather will be cool.

Bailu: On September 7th or 8th every year, due to the obvious southward shift of the direct point of the sun, the temperature in various places drops rapidly.

Autumnal equinox: On the 23rd or 24th of September every year, the direct sunlight point returns to the equator, forming equal length of day and night.

Cold dew: June 8th or 9th every year 10. At this time, the direct point of the sun began to move south.

First frost: 5438+00 on June 23rd or 24th every year, and the first frost period in the Yellow River Basin is generally in the late period of June 5438+00.

Beginning of winter: Every year165438+1October 7th or 8th, beginning of winter.

Xiaoxue: Every year1October 22nd or 23rd 165438+ the cold air force in the north increases and the temperature drops rapidly.

Heavy snow: 65438+ February 7th or 8th every year. At this time, the direct point of the sun is close to the tropic of Capricorn, and the days in the northern hemisphere are short and the nights are long.

Winter solstice: February 22nd or 23rd every year, 10. At this time, the sun shines almost directly on the tropic of Capricorn, and the northern hemisphere forms the southern part of the solstice, with short days and long shadows, which is the shortest day in a year.

Slight cold: Every year, on the 5th or 6th of October, 65438/kloc-0, the climate began to get cold.

Severe cold: 65438+ every year1October 20th or 2 1 day, which is the coldest time of the year.

Extended data:

The twenty-four solar terms reflect the influence of the sun on the earth and belong to the solar calendar category. It is a knowledge system formed by observing the movement of the sun in a year and understanding the changing laws of the four seasons, climate and phenology in a year.

It not only plays a guiding role in agricultural production, but also affects the food, clothing, housing and transportation of ancient people, and even cultural concepts. The current lunar calendar absorbs the solar terms of the trunk calendar as a supplement to the calendar, and is adjusted to conform to the tropic year through the "leap method" to form a combined calendar of yin and yang.

China's orthodox 24 solar terms are based on Henan. China's lunar calendar is a combination of yin and yang, which is based on the movement of the sun and the moon, so adding 24 solar terms can better reflect the cycle of the sun's movement.