Simple Tool
I was reading about what time of day is the safest, most effective sun exposure to acquire much needed Vitamin D... And discovered I had to go to a website by the Astonomical Applications Department to find the altitude of the sun and was told that anything over 50 degrees meant optimum UVB exposure. While the website is great for letting me know WHEN on any given day this will be... this app is great for letting me know where it is NOW.
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