howmuchsun

Vitamin D from sunlight in Dominican Republic

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 Dominican Republic.

CityLatitudeElevationVitamin D winter
Santo Domingo 18.47°N 24 m none
Santiago de los Caballeros 19.45°N 209 m none

How these dates are calculated