after hours vs twilight

after hours

prep
  • During the period after the legal hours of operation. 

twilight

noun
  • Any faint light through which something is seen; an in-between or fading condition. 

  • The soft light in the sky seen before the rising and (especially) after the setting of the sun, occasioned by the illumination of the earth’s atmosphere by the direct rays of the sun and their reflection on the earth. 

  • The time when this light is visible; the period between daylight and darkness. 

  • The time when the sun is less than 18° below the horizon. 

adj
  • Pertaining to or resembling twilight; faintly illuminated; obscure. 

verb
  • To illuminate faintly. 

How often have the words after hours and twilight occurred in a corpus of books? (source: Google Ngram Viewer )