Vitamin D from sunlight in Guinea
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 Guinea.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Conakry | 9.54°N | 13 m | none |
| Nzérékoré | 7.76°N | 482 m | none |
| Kankan | 10.39°N | 381 m | none |
The same sun that makes vitamin D also burns. UV index and sunburn times in Guinea →