Vitamin D from sunlight in Egypt
How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 4 cities in Egypt.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Cairo | 30.06°N | 23 m | none |
| Alexandria | 31.20°N | 9 m | none |
| Giza | 30.01°N | 19 m | none |
| Shubrā al Khaymah | 30.13°N | 26 m | none |
The same sun that makes vitamin D also burns. UV index and sunburn times in Egypt →