Is it okay to open the day before the 2020 summer solstice? What time is the sunrise on the summer solstice?

Is it okay to open the day before the 2020 summer solstice? What time is the sunrise on the summer solstice?
Introduction: It is necessary to choose an auspicious day for opening a business. So is it okay to open the day before the summer solstice in 2020? What time is the sunrise on the summer solstice? Pomegranate flowers are in full bloom in May of the lunar calendar. Han Yu has a poem that says "The pomegranate flowers in May are bright to the eyes". If you want to know more about May of the lunar calendar, please visit Shuimoxiansheng.com's special topic on May of the lunar calendar in 2020!

Is it okay to open the day before the 2020 summer solstice?

Lunar calendar: April 29, 2020 Gregorian calendar: June 20, 2020, Saturday, Gemini ○ Today's auspicious days in the lunar calendar: "Do not use the four days of the lunar calendar for major events"○ Repair graves, take up positions, fast and offer sacrifices, travel, get married, go to school, and seek help ○ Today's auspicious days in the lunar calendar: "Do not use the four days of the lunar calendar for major events"○ Accept marriage, pray for blessings, seek offspring, buy property, ship goods, build, break ground, raise beams and erect pillars, break ground, bury, start drilling, cancel marriages, move into new homes, seek medical treatment, travel by boat
Based on the above lunar calendar content, we can know that since today is "the day of the four departures, do not use for important events", it is not suitable to open a business on the day before the summer solstice in 2020!

What time is sunrise on the summer solstice?

Given the latitude A of the point where sunlight directly shines on the earth, we can find the sunrise time at any point on the earth (with the known latitude B). We have obtained a formula: T=12*arcCos(tgA*tgB)/π (applicable to the northern hemisphere )
Calculation shows that on the summer solstice: the sun's direct point is also on the Tropic of Cancer, A=B=23°26′, and substituting it into the formula we get T=5.28, which means the sunrise time is 6:34:08 in the morning.
The summer solstice sunrise is 6 o'clock!

The Origin of Summer Solstice

The summer solstice was also called "Summer Festival" or "Summer Solstice Festival" in ancient times.
In ancient times, on the summer solstice, people offered sacrifices to gods and prayed for the elimination of disasters and a good harvest. "The Book of Zhou: Spring Officials" states: "When the summer solstice comes, bring local animals and demons." In the Zhou Dynasty, offering sacrifices to gods at the summer solstice was meant to eliminate epidemics, famines, and deaths from starvation.
"Records of the Grand Historian: The Book of Fengshan" records: "On the summer solstice, people offer sacrifices to the earth with music and dance." The summer solstice was an ancient festival. In the Song Dynasty, it began on the day of the summer solstice, when all officials had three days off. In the Liao Dynasty, "the summer solstice was called the 'Chao Festival', and women presented colorful fans and sachets of powder to each other as gifts."
In the seventh century BC, our ancestors used a gnomon to measure the sun's shadow and determined the summer solstice.
The summer solstice each year begins on June 21st (or 22nd) and ends on July 7th (or 8th). According to the Kezun Xiandu Manuscript, “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. ‘Summer solstice’ means the extreme.

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