howmuchsun

Vitamin D from sunlight in Jamaica

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 Jamaica.

CityLatitudeElevationVitamin D winter
Kingston 18.00°N 65 m none
Spanish Town 17.99°N 31 m none
Portmore 17.97°N 7 m none

How these dates are calculated