Opening day? Crossword Clue

 The answer to the crossword clue "Opening day?" depends on the specific context. It can refer to the opening day of a sporting event, a business, or a season.

Here are some possible answers for the crossword clue "Opening day?":

GAME DAY

SEASON OPENER

BUSINESS OPENING

STORE OPENING

FESTIVAL OPENING

If you can provide more context about the crossword puzzle you are working on, I might be able to give you a more specific answer.

I hope this helps!