howmuchsun

Vitamin D from sunlight in South Sudan

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 South Sudan.

CityLatitudeElevationVitamin D winter
Juba 4.85°N 518 m none
Winejok 9.01°N 419 m none
Yei 4.09°N 836 m none

How these dates are calculated