Vitamin D from sunlight in French Guiana
How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 1 city in French Guiana.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Cayenne | 4.94°N | 7 m | none |
The same sun that makes vitamin D also burns. UV index and sunburn times in French Guiana →