How to calculate the dog days?

The calculation method of summer days is based on the lunar calendar, which needs to start from summer to the third Geng day in the future, that is, the first day of summer days.

It needs to be counted from summer to the third Geng day in the future, and the third Geng day from summer to Sunday is the first day of lodging. Then some friends may ask, why do you want to do this calculation? In fact, this is still related to the above five elements.

According to the Five Elements, autumn belongs to "Geng Xin Gold", so when calculating the summer days, we need to choose Geng Day as the calculation day. In addition, the long summer is the hottest time in a year, and the hottest time in a year starts from summer to the 20th to 30th day in the future, so the number of days in summer needs to be counted from summer to the 3rd watch in the future. We know that there are ten days in a day, so we can say that there is a Geng Day every ten days.

The weather changes calculated by the ancients according to the five elements theory are not accurate, and sometimes there will be some extreme weather. The weather with the highest temperature does not necessarily appear in the dog days, but it is undeniable that it is really hot in the dog days of summer, and friends need to do a good job in heatstroke prevention and cooling.