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 6 cities in Egypt.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Cairo | 30.06°N | 23 m | none |
| Alexandria | 31.20°N | 9 m | none |
| Port Said | 31.27°N | 16 m | none |
| Suez | 29.97°N | 11 m | none |
| Al Mansurah | 31.04°N | 15 m | none |
| Al Maḩallah al Kubrá | 30.97°N | 17 m | none |
The same sun that makes vitamin D also burns. UV index and sunburn times in Egypt →