Yeah sure, I'll make sure to remember that in December when the sun is barely above the horizon even at noon-time. I seem to remember reading that you don't ge

Yeah sure, I'll make sure to remember that in December when the sun is barely above the horizon even at noon-time. I seem to remember reading that you don't get much UV light when the sun is below 40 degrees. You don't have to go far north for the sun to be kind of useless in winter. An interesting side-note, there's a theory that Europeans are so white because the gulf-stream makes it warm enough for farming grains despite being quite far north.. and so you don't get much Vitamin D from the sun all of winter, and you don't get it from your food (like the Inuits do, from eating a lot of fish), so white skin is a "hack" to try to maxize vitamin D production, despite the obvious downsides.