howmuchsun

Vitamin D from sunlight in Greenland

How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 1 city in Greenland.

CityLatitudeElevationVitamin D winter
Nuuk 64.18°N 5 m 17 Aug – 8 May (265 days)

How these dates are calculated