beanfeast vs red letter day

beanfeast

noun
  • Any similar social occasion. 

  • A dinner party given to the employees of a firm. 

red letter day

noun
  • A particularly significant day; a day of personal or sectarian celebration. 

  • A day marked in red on calendars; a church feast day. 

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