howmuchsun

Vitamin D from sunlight in Kenya

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 Kenya.

CityLatitudeElevationVitamin D winter
Nairobi 1.28°S 1,684 m none
Kakamega 0.28°N 1,563 m none
Mombasa 4.05°S 20 m none

How these dates are calculated