Sunlight, as we all know, is the greatest source of Vitamin D. It is needed by our body in a specific amount to carry out different functions. But even though sunlight is available to us in abundance, a large majority of people across the globe are vitamin D deficient. It is because we do not spend much time in the sun, due to the fear of tanning and sunburns. Moreover, we cannot obtain this nutrient sufficiently from food. So let us understand how long is it required to stay out in the sun to get the maximum amount of vitamin D.