glorious vs red-letter

glorious

adj
  • Excellent, wonderful; delightful. 

  • Exhibiting attributes, qualities, or acts that are worthy of or receive glory. 

  • Bright or shining; 

red-letter

adj
  • Particularly significant or positive. 

How often have the words glorious and red-letter occurred in a corpus of books? (source: Google Ngram Viewer )