Come and stay for a few days.

Volts 10 Volts a day. One volt is 10 day, two volts is 10 day or 20 days, and three volts is 10 day. Because the time of accommodation is not fixed every year, the length of accommodation is not the same, so you need to check the almanac to calculate. To put it simply, we can use the four-character formula of "Summer Solstice Three Geng" to express the lodging date, that is, from the third Geng day after the Summer Solstice, the initial lodging is 10 day, the intermediate lodging is 10 day or 20 days, and the final lodging is 65438+.

The dog days are the hottest thirty or forty days in a year in the Central Plains. The dog days are calculated according to the lunar calendar, between early July and mid-August in the solar calendar.

The reason why the air humidity is high in dog days is that the southeast wind blows in dog days, and the Pacific Ocean and Indian Ocean are in the southeast direction. The air is humid, and the humidity of the sea breeze causes the high humidity in the dog days. In dog days, "high temperature and high humidity" is the climate characteristic in the south of China, while "high temperature and dryness" occurs in the north.