BLUEMOON
Set to 2 different clues across 2 published puzzles, most often “Rare occasion” — The New York Times, Saturday, 4 March 2006.
8 letters
Every clue on record, most used first
- Rare occasiononce
The New York Times — Saturday, 4 March 2006
- Seldom-seen occurrenceonce
The New York Times — Saturday, 28 May 1994