howmuchsun

Vitamin D from sunlight in Reunion

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 Reunion.

CityLatitudeElevationVitamin D winter
Saint-Denis 20.88°S 44 m none
Saint-Paul 21.01°S 11 m none

How these dates are calculated