howmuchsun

Vitamin D from sunlight in Republic of the Congo

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 Republic of the Congo.

CityLatitudeElevationVitamin D winter
Brazzaville 4.27°S 284 m none
Pointe-Noire 4.78°S 12 m none

How these dates are calculated