Can you get a tan on cloudy days?

Ultraviolet radiation will make the skin tan, and it will also tan on cloudy days. Many people think that there is no sun on cloudy days. Actually, it's not like this. They just think that the shit in the sun will get tanned. In fact, whether it is cloudy or sunny, ultraviolet rays are the same, and ultraviolet rays will not change with the number of clouds. Chengdu can't see the sun for a year, and it is often cloudy, but it should also be protected from the sun. If you don't get sun protection, you will become black. Going out without sun protection is underestimating your enemy, and the whole sun protection plan is not good. On cloudy days, the sun will still rise, but it will be covered by clouds, and ultraviolet rays will be covered by thick clouds, which is also harmful to people. Clouds have little effect on ultraviolet rays, and 90% of ultraviolet rays can shine on us through clouds. We must know about ultraviolet rays first. The higher the intensity, the higher the ultraviolet series. When the ultraviolet reaches the third level, it is moderate. Be sure to do some sun protection at this time. When ultraviolet rays reach the five poisons, if we don't do sun protection, our skin will turn black in half an hour. If the ultraviolet reaches the fifth level, don't go out for a day. At eight o'clock in the morning, ultraviolet rays can reach the intermediate level. There are two or three grades on cloudy days, so you must apply sunscreen to protect your skin from becoming black. When we go out, we must take some measures, such as wearing a hat or playing an umbrella. /kloc-the sun is strongest from 0/0 to 3: 00, so you must avoid going out to bask in the sun at this time. Even on rainy days, there will be ultraviolet rays when there is sunshine. As long as there is sunshine, ultraviolet rays will shine on us through the clouds, which must not be ignored. We must do a good job of sun protection during the day. If we are exposed to ultraviolet rays for a long time, our skin will turn black, melanin will often spread, and cell mutation will cause skin aging.