feast vs red letter day

feast

noun
  • A festival; a holy day or holiday; a solemn, or more commonly, a joyous, anniversary. 

  • A very large meal, often of a ceremonial nature. 

  • Something delightful 

verb
  • To hold a feast in honor of (someone). 

  • To partake in a feast, or large meal. 

  • To dwell upon (something) with delight. 

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 feast and red letter day occurred in a corpus of books? (source: Google Ngram Viewer )