In general, a night service is any service that operates at night, such as a night-time public transport service or a 24-hour telephone support service.
Night service in particular is also a feature of private branch exchanges and business telephone systems, whereby for a set period during the day (usually those hours outside of normal office or work hours, when normal operator services are not provided), incoming calls are automatically redirected by the switchboard to particular telephones or other equipment (such as an answering machine, auto attendant, voice mail system, or the duty station of a night watchman).
Famous quotes containing the words night and/or service:
“[T]hat moment of evening when the light and the darkness are so evenly balanced that the constraint of day and the suspense of night neutralize each other, leaving absolute mental liberty. It is then that the plight of being alive becomes attenuated to its least possible dimensions.”
—Thomas Hardy (1840–1928)
“It’s 10 p.m. Do you know where your children are?”
—Public Service Announcement.