howmuchsun

Vitamin D from sunlight in Indonesia

How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 8 cities in Indonesia.

CityLatitudeElevationVitamin D winter
Jakarta 6.21°S 16 m none
Surabaya 7.25°S 8 m none
Bekasi 6.23°S 18 m none
Bandung 6.92°S 714 m none
Medan 3.58°N 26 m none
Depok 6.40°S 92 m none
Tangerang 6.18°S 18 m none
Palembang 2.92°S 5 m none

How these dates are calculated