Rare Occurrence, Once in a __
This page is the CodyCross answer for the clue below from Canada, Group 1274, Puzzle 2 (Drumheller).
Question
Rare Occurrence, Once in a __
Answer
BLUEMOON
Word Meaning:
BLUE MOON — (countable) An extra full moon that appears in a subdivision of a year, namely:
Definitions from Wiktionary.