Suitable time for a farewell? (4,3)

I believe the answer is:

good day

'for a farewell?' is the definition.
(good day is a kind of farewell)

'suitable time' is the wordplay.
'suitable' becomes 'good' (similar in meaning).
'time' becomes 'day' (day is a kind of time).
'good'+'day'='GOOD-DAY'

(Another definition for good day that I've seen is " welcome".)

I've seen this clue in the Evening Standard.

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