What is the difference between Beginning of Summer and Summer Solstice? Which solar term represents the arrival of summer?

What is the difference between Beginning of Summer and Summer Solstice? Which solar term represents the arrival of summer?
Both the Beginning of Summer and the Summer Solstice are one of the twenty-four solar terms. So, let’s take a look at the difference between the Beginning of Summer and the Summer Solstice, and which solar term represents the arrival of summer? The fourth month of the lunar calendar usually marks the beginning of summer, when the temperature starts to warm up. It is the Huaixia, Mengxia, the month of Jiansi (the month of snake), and the Zhonglü in the musical scale. Every day in the fourth month of the lunar calendar is good or bad. Click on Mr. Shui Mo’s special topic on the fourth month of the lunar calendar to unlock relevant knowledge!

The difference between Beginning of Summer and Summer Solstice

1. Time difference
Beginning of Summer: May 5-7 of each year Summer Solstice: June 21-22 of each year
2. Different solar terms
Beginning of Summer: Beginning of Summer is the 7th solar term in the 24 solar terms and the first solar term in summer. Summer Solstice: Summer Solstice is the 10th solar term in the 24 solar terms and the fourth solar term in summer.
3. The Sun is at a different latitude
Beginning of Summer: The handle of the Big Dipper points to the southeast, and the sun's ecliptic longitude reaches 45°.
Summer Solstice: The Summer Solstice is the turning point of the sun's northward journey. After the Summer Solstice, the sun will "go back", and the point of direct sunlight will begin to move southward from the Tropic of Cancer (23°26' north latitude).
4. Differences in climate
Beginning of Summer: After the beginning of summer, sunshine increases, the temperature gradually rises, thunderstorms increase, and crops enter a stage of vigorous growth.
Summer Solstice: After the Summer Solstice, the ground is heated strongly, and air convection is vigorous, making thunderstorms prone to form.
5. Differences between the three phases
Beginning of Summer: There are three signs for the beginning of summer: the first is the chirping of crickets, the second is the emergence of earthworms, and the third is the growth of melons.
Summer Solstice: There are three signs of Summer Solstice: the first is the shedding of deer antlers, the second is the shedding of deer antlers, and the third is the growth of pinellia.

Which solar term, Beginning of Summer or Summer Solstice, represents the arrival of summer?

The Beginning of Summer means that summer is coming, and the Summer Solstice means that the hot summer has begun.
Introduction to the Beginning of Summer:
Around the first day of April every year (between May 5-6 of the Gregorian calendar), when the sun reaches 45 degrees of the ecliptic longitude, it is the Beginning of Summer in the lunar calendar. "When the Big Dipper points to the southeast, it is the Beginning of Summer. All things grow at this time, hence the name Beginning of Summer." At this time, the sun's ecliptic longitude is 45 degrees. In astronomy, the Beginning of Summer means that we are about to say goodbye to spring and it is the beginning of summer.
Summer Solstice Introduction:
The summer solstice falls on June 21 or 22 every year. Although the summer solstice has the longest daylight and the highest sun angle, it is not the hottest time of the year. This is because the heat close to the surface is still accumulating and has not yet reached its peak. As the saying goes, "The heat is in the dog days." The real hot weather is calculated based on the summer solstice and the beginning of autumn. Around mid-July to mid-August, temperatures in all parts of my country are at their highest, with the highest temperatures in some areas reaching around 40°C.

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