Crossword Genius

Romcom reboot 'timeless': any need of it? (3,4,3)

Ross

I believe the answer is:

one fine day

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'romcom' is the definition.
(1996 movie. Romance-Comedy genre)

I don't understand the rest of the clue.

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(Other definitions for one fine day that I've seen before include "Terrible summer" , "noted by Puccini?" , "'Madame Butterfly' aria" , "Dreadful English summer" .)

I've seen this clue in The Everyman puzzle in The Observer.
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