howmuchsun

Vitamin D from sunlight in Lithuania

How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 5 cities in Lithuania.

CityLatitudeElevationVitamin D winter
Vilnius 54.69°N 98 m 15 Sep – 8 Apr (206 days)
Kaunas 54.90°N 96 m 14 Sep – 9 Apr (208 days)
Klaipėda 55.71°N 6 m 11 Sep – 13 Apr (215 days)
Šiauliai 55.93°N 129 m 10 Sep – 13 Apr (216 days)
Panevėžys 55.73°N 55 m 11 Sep – 12 Apr (214 days)

How these dates are calculated