Vitamin D from sunlight in San Marino
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 San Marino.
| City | Latitude | Elevation | Vitamin D winter |
|---|---|---|---|
| Serravalle | 43.97°N | 119 m | 19 Oct – 3 Mar (136 days) |
The same sun that makes vitamin D also burns. UV index and sunburn times in San Marino →