Is a Healthy Tan, Healthy?

What is a healthy tan. Is a healthy tan, healthy?  As the earth rotates around and around the sun moon in this solar system and sun flares up and out more and more.  The sun rays become more unhealthy at some periods of time of day and during some episodes that may build during the seasons and weather pattern.  Why is it that you can go out on a cloudy day and get a very bad sun burn.

Portrait of male with bad sunburn

Portrait of male with bad sunburn

Why is early in the morning better to be out in the sun and get your vitamin d that the body needs so much of these days as more and more people are beginning to have vitamin d deficiency.  Occidental Vacation Club Reviews show the best time to get the sun.