8 am to 10, and 4 pm to 7 pm is the best time to bask in the sun. At this time, the sunlight is mainly the beneficial ultraviolet A beam, which can make the human body produce vitamin D, thus enhancing the anti-tuberculosis and osteoporosis prevention ability of the human immune system and reducing the incidence of arteriosclerosis.

You were sunbathing ... waiting for heatstroke! Ha ha!