Vitamin D from sunlight in Yemen
How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 6 cities in Yemen.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Sanaa | 15.35°N | 2,253 m | none |
| Aden | 12.78°N | 7 m | none |
| Taiz | 13.58°N | 1,400 m | none |
| Ibb | 13.97°N | 1,931 m | none |
| Al Ḩudaydah | 14.80°N | 10 m | none |
| Mukalla | 14.54°N | 39 m | none |
The same sun that makes vitamin D also burns. UV index and sunburn times in Yemen →