nightlife districts; drinking districts
veil of darkness; curtain of night
dark of the night; darkness of the night
Nachtaktivität; Nachtmensch
nächtliche Aktivitäten; nächtlicher Sex; nächtlicher Geschlechtsverkehr
hostess (at a bar, cabaret, etc.)
every night comes to an end; every night sees a dawn
evening departure; night departure
Kristallnacht (night of concerted violence against Jews in Germany and Austria from November 9-10, 1938)
night work (in the entertainment business or sex industry)
parents may risk life and limb for their children (like a pheasant when the plains are burning or a crane on a cold night)
Night of the Long Knives (1934 SA purge in Germany); Röhm Purge