When the sun is over the ____, it's traditionally OK to booze (7)

I believe the answer is:

yardarm

(Other definitions for yardarm that I've seen before include "half of a ship's spar" , "Something connected to a sail" , "Either end of a sail beam" , "Ship's beam" , "Hanging place on board old ships" .)

I've seen this clue in The Times.

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