VDC test kit slider
VDC test kit slider
Is is true that you cannot synthesise Vitamin D when the altitude of the sun is less than 50 degrees? Your Sunshine Calendar shows Los Angeles in the winter as available sunbathing time. The sun altitude of Los Angeles is less than 50 degrees from about October to March. Is the Sunshine Calendar incorrect?

Asked by  doverman53 on October 28, 2014

Recent Discussion

Popular Questions