howmuchsun

Vitamin D from sunlight in Kyrgyzstan

How long you need in the sun to make vitamin D, and when the sun is too low to make any at all, for 3 cities in Kyrgyzstan.

CityLatitudeElevationVitamin D winter
Bishkek 42.87°N 767 m 30 Oct – 19 Feb (113 days)
Osh 40.53°N 988 m 8 Nov – 10 Feb (95 days)
Manas 40.94°N 780 m 6 Nov – 12 Feb (99 days)

How these dates are calculated