How many days is midnight on the summer solstice?

"Fall asleep on the third year of the summer solstice" instead of "fall asleep on the third night of the summer solstice". This "Geng" means "Geng Day", that is, I fall asleep on the third Geng Day after the summer solstice, and there are still 25 days before the summer solstice in 2020;

The first Geng day after the summer solstice in 2020:

June 26th, 2020 (Boxer Day)

The second Geng day after the summer solstice in 2020:

July 6, 2020 (Geng Xuri)

The third Geng day after the summer solstice in 2020:

July 2020 16 (Geng Shen Day)

In ancient times, time was recorded through the combination of heavenly stems and earthly branches. The word "Geng" in the third Geng is the seventh word in 10 of the number "A, B, C, D, E, G, Xin, Ren and Gui" in the heavenly stems, and the Geng Day is repeated every 10 days.

According to the provisions of the almanac, "counting will start on the third Geng day of the summer solstice", which means counting will start from the summer solstice and crouching on the third Geng day. The "Geng Day" here refers to the days prefixed with "Geng" in the ancient "Ganzhi Jiri Law". It is also stipulated in the Almanac that the first Geng Day after the "beginning of autumn" solar term is the day when the last volt begins.

Extended data:

Astronomical experts said that although the summer solstice indicates that the hot summer has arrived, it is not the hottest time, because the heat near the ground continues to accumulate and has not reached its maximum. From mid-July to mid-August, the temperature is the highest in all parts of China.

The third Geng day of the summer solstice is one of the methods to calculate the dog days in China lunar calendar, which means that the third Geng day is the first day.

In ancient times, time was recorded through the combination of heavenly stems and earthly branches. The word "Geng" in the third Geng is the seventh word in 10 of the number "A, B, C, D, E, G, Xin, Ren and Gui" in the heavenly stems, and the Geng Day is repeated every 10 days.