midnight sun

Noun

midnight sun (usually uncountable, plural midnight suns)

1. (usually) The phenomenon occurring when the Sun does not set but only approaches the horizon at midnight; it occurs near the summer solstice in the polar regions.
   • He has only retained three engravings; namely, a map of the country, which is very little known, from Torneo to North Cape; a View of Torneo by the midnight moon; and a View of North Cape by the midnight sun.1806 November, “Observanda Externa [Lapland. North Cape.]”, in The Literary Panorama. […], volume I, London: Printed by Cox, Son, and Baylis, […] for C. Taylor, […], published 1807, →OCLC, column 414
   • Locked icebergs splintering through the awful night; / And quenchless midnight suns with their wild scarlet light.1856 August 28, Alfred B[illings] Street, Science: A Poem Dedicated to the American Association for the Advancement of Science, Albany, August 28, 1856, Albany, N.Y.: Van Benthuysen, printer, […]...