bang up to date vs contemporary

bang up to date

contemporary

adj
  • Modern, of the present age (shorthand for ‘contemporary with the present’). 

  • From the same time period, coexistent in time; contemporaneous. 

noun
  • Someone or something living at the same time, or of roughly the same age as another. 

  • Something existing at the same time. 

How often have the words bang up to date and contemporary occurred in a corpus of books? (source: Google Ngram Viewer )