Highly Recommended To Sunbathe In The Morning Around 9 O'clock
Vitamin D activation can occur with the help of sunlight. It is highly recommended to sunbathe in the morning around 9 o'clock. In fact, if you are in a hot area such as the coast, at 9 o'clock the sun will be quite intense. It's best to sunbathe before 9 o'clock. Apart from choosing the time in the morning, the body also needs protection. Sensitive body parts must be protected. It turns out that sunbathing position also determines the optimal absorption of vitamin D. Backing to the sun is the best position, because the spine will be exposed to sunlight and the spine absorbs the most vitamin D. Vitamin D plays an important role in the health of bones and teeth. The reason is, vitamin D is good for helping the absorption of calcium in the body. Vitamin D plays a role in supporting the growth of children's bones and teeth, and preventing fragility or osteoporosis in the elderly. Exposure to morning sun from sunrise to 09.00 and evening from 15.00 to sunset for 10 to 15 minutes.
Upvoted! Thank you for supporting witness @jswit.
It is the UV B light from the sun that create vitamin D.
This spectrum is filtered out by the atmosphere. It is also filtered by glass.
So, you will not get vitamin D sitting by a window.
I understand that it is generally best to catch rays at noon because the rays from the sun pass through less atmosphere and should be higher in UV B radiation.
Morning and evening are bad times because the sun's rays have to pass through more atmosphere.
One only needs about ten minutes of sun; so I've been going out at noon on days with low cloud cover.