howmuchsun

Vitamin D from sunlight in Chile

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 Chile.

CityLatitudeElevationVitamin D winter
Santiago 33.46°S 556 m 12 Jun – 4 Jul (23 days)
Punta Arenas 53.16°S 0 m 21 Mar – 30 Sep (194 days)

How these dates are calculated