What's the date of Sanfu?

The dog days, which appear between the summer heat and the summer heat, are the period with the highest temperature, the highest humidity and the most severe sultry heat in a year. Three volts can be divided into initial, middle and final volts, and its date is determined by the coordination of 24 solar terms and the dates of dry and branch. After "entering the volt", many places in the country will enter the continuous high temperature mode.

The traditional almanac stipulates that "counting from the third Geng day in summer", that is to say, "counting down from the summer day until the third Geng day" is about to begin to dormant. The "Geng Day" here refers to the days prefixed with "Geng" in the ancient "Ganzhi Jiri Law". "crouching" means being forced to hide underground; This also means that it is too hot to move.

The length of dog days mainly lies in the difference between middle and next days. Because the third Geng day (the first autumn) after the summer solstice solar term occurs at different times every year, the number of days in the middle autumn is also different. The incubation time is long or short, which may be 10 day or 20 days. So there are two situations: some years are 30 days in dog days, and some years are 40 days.

Common sense of heatstroke prevention in three volts:

1. In summer, strenuous outdoor and daytime activities, such as mountain climbing, are not recommended. It is recommended to choose sports activities such as swimming and jogging in the morning and evening.

2, drink more boiled water, and drink water regularly, don't wait for thirst before drinking, and it is not advisable to binge drink after thirst.

3. The nap time should not be too long.

4. The temperature difference between indoor and outdoor air conditioners should not be too large. The temperature difference between indoor and outdoor air conditioners should not exceed 5 degrees. Even if the weather is hot again, the indoor temperature of the air conditioner should not be lower than 24 degrees.

Remember to prepare sunscreen when you go out in summer. It is best not to walk in the hot sun from 10 to 4 pm. If you must go out at this time, you must take good protection, such as umbrella, sun hat and sunglasses, and it is best to apply sunscreen.

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