nasłonecznienie

Etymology
From.

Noun

 * 1) amount of sunshine, hours of sunshine; insolation the incident radiant energy emitted by the sun which reaches a unit area over a period of time, typically measured over a horizontal area at the Earth's surface or at the top of Earth's atmosphere
 * 1) amount of sunshine, hours of sunshine; insolation the incident radiant energy emitted by the sun which reaches a unit area over a period of time, typically measured over a horizontal area at the Earth's surface or at the top of Earth's atmosphere