nocturne.

About nocturne

The depiction of night in paintings is common in Western art. Paintings that feature a night scene as the theme may be religious or history paintings, genre scenes, portraits, landscapes, or other subject types. Some artworks involve religious or fantasy topics using the quality of dim night light to create mysterious atmospheres. The source of illumination in a night scene—whether it is the moon or an artificial light source—may be depicted directly, or it may be implied by the character and coloration of the light that reflects from the subjects depicted. They are sometimes called nocturnes, or night-pieces, such as Rembrandt's The Night Watch, or the German Romantic Caspar David Friedrich's Two Men Contemplating the Moon of 1819.