When is the ambush in 2016?

The traditional method of calculating the dog days is to start from the summer solstice and follow the arrangement of the stems and branches. The third Geng day is the first day of the dog days. The fourth Geng day is Zhongfu, and the first Geng day after the beginning of autumn is Mofu. So, when will it enter the ambush in 2016? We can calculate,

Which day will it enter the ambush in 2016? The time of the ambush in 2016: July 17;

The time of the three volts in 2016

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The first fall: July 17th - July 26th

The middle fall: July 27th - August 15th

The last fall: August 16th -August 25

The "Three Volts" refer to the first, middle and last days, which is about the period from mid-July to mid-August. After the summer solstice, although the days are getting shorter and the nights are getting longer, the days are still longer than the nights. The ground still absorbs more heat than it emit, and the temperature near the ground is getting higher day by day. During the "three volts" period, the ground absorbs almost more heat than it emit, and the weather is the hottest. Later, the heat absorbed by the ground begins to be less than the heat emitted by the ground, and the temperature slowly drops. Therefore, the hottest time of the year usually occurs during the "three days" of the summer solstice.

Starting from the third "Gen" day after the summer solstice, the first period (10 days), the middle period (10 or 20 days), and the last period (the first Geng day after the Beginning of Autumn), 10 days), is the hottest time of the year.

After entering the third volt, the surface humidity increases, absorbing more heat and dissipating less heat every day. The heat on the surface layer accumulates, so it becomes hotter day by day. When entering the third volt, the accumulated heat on the ground reaches its peak, and the weather Just the hottest. In addition, there is a lot of rain in summer, the air humidity is high, and the heat capacity of water is much greater than that of dry air, which is also an important reason for the muggy weather. The subtropical high pressure strengthens in July and August. Under the control of the subtropical high, the downdraft inside the high pressure makes the weather clear and less cloudy, which is conducive to sunlight. The ground radiation heats up, making the weather hotter.

The saying that "the five elements are mutually reinforcing and restraining each other" was popular in the Qin and Han Dynasties. It is believed that the hottest summer day belongs to fire, and Geng belongs to metal. Metal is afraid of being melted by fire (fire overcomes metal), so on Geng day, metal will hide. . So it was stipulated that starting from the third Geng day from the summer solstice is the first day (10 days), and starting from the fourth Geng day from the summer solstice is the middle day (some years have 10 days, and some years have 20 days). The first Geng day from the beginning of autumn is Mofu, also known as Zhongfu (which has 10 days), and is generally called Sanfu.

When there are 4 Geng days between the Summer Solstice and the Beginning of Autumn, the Zhongfu period is 10 days, and when there are 5 Geng days, it is 20 days. Therefore, the period from the Zhongfu period to the last period is sometimes ten days, and sometimes it is twenty days. , and the "first fall" and "last fall" are both 10 days.