When does the 2021 summer solstice begin? Is the day the longest on the summer solstice?

When does the 2021 summer solstice begin? Is the day the longest on the summer solstice?
The summer solstice marks the arrival of summer. Want to learn more about the 2021 Summer Solstice? May is the time when pomegranate flowers are in full bloom, hence the name Pomegranate Month. The weather is getting warmer. How much do you know about the fifth month of the lunar calendar? If you want to know more about the fifth month of the lunar calendar in 2021, come and have a look at Mr. Shui Mo!

When does the 2021 summer solstice begin?

The Summer Solstice is the tenth solar term in the twenty-four solar terms and the fourth solar term in summer. It occurs when the sun reaches 90 degrees of the ecliptic longitude and falls on June 21-22 of the Gregorian calendar every year.
The 2021 Summer Solstice falls on the lunar calendar: May 12, 2021 ; the Gregorian calendar: Monday, June 21, 2021
Specific time: 11:32 noon

Is the day the longest on the summer solstice?

The summer solstice is the day with the shortest night and longest day in the year.
On the summer solstice, the sun reaches its northernmost point of the year, almost directly above the Tropic of Cancer (23°26' north latitude). The daylight in the northern hemisphere reaches its longest, and the further north you go, the longer the daylight becomes. For example, the day length in Haikou, Hainan is about 13 hours, while in Mohe, Heilongjiang it is as long as 17 hours, and in Beijing it is about 15 hours. Moreover, this day is the day when the sun shines the largest range in the Northern Hemisphere in a year, and it is also the day when the sun is highest from the earth. After the summer solstice, the position of the sun directly above the ground gradually moves southward, and the daylight hours in the northern hemisphere become shorter.
"Kezun Xiandu Manuscript" records: "When the sun reaches its northernmost point, the day is at its longest, and the shadow is at its shortest, so it is called the summer solstice. 'Zhi' means "extreme." This shows that the phenomenon of the summer solstice had been discovered in ancient times, and this is also the origin of the name "summer solstice."

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