Isle in 124 days? (5)
I believe the answer is:
capri
'isle' is the definition.
(Italian island)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for capri that I've seen before include "Island home of G. 24" , "Island in the Gulf of Naples" , "Italian isle" , "Old Ford model - Italian island" , "popular resort" .)