howmuchsun

Vitamin D from sunlight in Denmark

How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 5 cities in Denmark.

CityLatitudeElevationVitamin D winter
Copenhagen 55.68°N 14 m 10 Sep – 13 Apr (216 days)
Århus 56.16°N 10 m 8 Sep – 15 Apr (220 days)
Odense 55.40°N 17 m 11 Sep – 12 Apr (214 days)
Aalborg 57.05°N 10 m 5 Sep – 18 Apr (226 days)
Frederiksberg 55.68°N 15 m 10 Sep – 13 Apr (216 days)

How these dates are calculated