about time vs as soon as possible

about time

adv
  • Close to the right time. 

  • Far past the desired time. 

  • Used other than figuratively or idiomatically: see about, time. 

as soon as possible

adv
  • As soon as is possible; at one's earliest convenience; at the earliest possible time. 

How often have the words about time and as soon as possible occurred in a corpus of books? (source: Google Ngram Viewer )