Definition of "all-night"

Spite of brown-stone trimmings, plate-glass and mosaic vestibule floors, the water does not rise in summer to the second story, while the beer flows unchecked to the all-night picnics on the roof.

1890, Jacob A[ugust] Riis, “The Awakening”, in How the Other Half Lives: Studies among the Tenements of New York, New York, N.Y.: Charles Scribner’s Sons, page 19

The former G.E.R. all-night service between Liverpool Street and Chingford, at hourly intervals, is revived.

1961 January, “The North-East London electrification of the Great Eastern Line”, in Trains Illustrated, page 20