Here are the possible solutions for 11 mission celebrated in this puzzle clue
Answer
Clue
Relevancy
apollo
Clue
__ 11, mission celebrated in this puzzle
Definition
(Greek) a large tropical butterfly
leap
Clue
Event celebrated in this puzzle, and an example of how the theme works
Definition
(Scots) to spring off the ground
leapday
Clue
Quadrennial occasion celebrated by this puzzle's theme entries
spring
Clue
Arrival celebrated in this puzzle
valueofpi
Clue
Subject of an annual March 14 celebration and of this puzzle, celebrated in both a literal and a numerical way in the first square of the starred answers, reading left to right
wayne
Clue
Film star celebrated in this puzzle
meta
Clue
Puzzle-within-a-puzzle puzzle
Definition
(US) concerned with cultural conventions; (of an artistic work) self-referential
covertoperation
Clue
Secret military mission ... or a hint to the circled letters in this puzzle?
