Daglys

Daglys is the word for daylight in Danish and Norwegian, referring to the natural light provided by the sun during daytime. In Swedish, the closest cognate is dagljus. The term derives from Germanic roots, combining a word for day (dag) with a word for light (lys/ljus).

In use, daglys denotes the period and quality of natural daylight as distinct from darkness and from artificial illumination. It is commonly employed in everyday language to describe daylight conditions, as well as in meteorology, photography, and design to distinguish natural daylight from artificial light. The length and intensity of daglys vary with the season and latitude, producing long days in summer and short days in winter, with notable extremes near the polar circles.

Regional notes and terminology: Danish and Norwegian typically use daglys as a single word, while Swedish uses dagljus. The concept also intersects with discussions of photoperiod, daylighting in architecture, and the cultural perception of daylight in different climates.

See also: daylight, daylighting, civil twilight.