howmuchsun

Vitamin D from sunlight in Syria

How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 2 cities in Syria.

CityLatitudeElevationVitamin D winter
Aleppo 36.20°N 401 m 22 Nov – 26 Jan (66 days)
Damascus 33.51°N 701 m 14 Dec – 3 Jan (21 days)

How these dates are calculated