howmuchsun

Vitamin D from sunlight in Albania

How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 3 cities in Albania.

CityLatitudeElevationVitamin D winter
Tirana 41.33°N 113 m 28 Oct – 21 Feb (117 days)
Durrës 41.32°N 0 m 28 Oct – 21 Feb (117 days)
Vlorë 40.47°N 58 m 31 Oct – 17 Feb (110 days)

How these dates are calculated