about time vs contemporarily

about time

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

  • Far past the desired time. 

  • Close to the right time. 

contemporarily

adv
  • At the time being discussed; then. 

  • In the present time. 

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