When does the heat start and end?

In the summer of 2023, the high temperature began in July 1 1 and ended in August 19.

"Dog days" is the hottest period in a year, and the dog days are divided into three stages: the beginning, the middle and the end. There are some differences in the temperature corresponding to each stage. Generally speaking, the intermediate level is the hottest period in a year, which lasts for a long time, ranging from ten to twenty days.

There are 40 days in dog days this year, 10 days before, 20 days in the middle and 10 days after. In fact, the days of midsummer are not fixed. For example, in some years, the summer day is only 10 days, while in some years, the summer day is 20 days. The midsummer is determined by several Geng days between "Summer" and "beginning of autumn". This year's long summer time is May 6th, which is March17th (Saturday) of the lunar calendar.

Incubation time:

The expression of the article "Summer June Festival" in the Complete Works of the Chronology of Ming and Chen Sanmo is: "There are three volts in summer, the third one in summer is the first one from May to Sunday, the fourth one is the middle one, and the last one in early autumn is the last one."

Generally speaking, from summer to the third Geng Day in the future to the day before the second Geng Day after beginning of autumn, it is divided into "early", "middle" and "final", commonly known as "dog days". Corresponding to the modern solar calendar, dog days generally begin in mid-July and end in late August.

The time of accommodation is not fixed every year, and the length of accommodation is also different. You need to check the almanac to calculate it. Simply put, we can use the formula of "Xia San Geng" to express the lodging date, that is, from the third Geng day in Xia Hou, the initial lodging is 10 day, the intermediate lodging is 10 day or 20 days, and the final lodging is 10 day.