Yet get different diet at dusk? (8)
I believe the answer is:
eventide
'dusk?' is the definition.
(I've seen this before)
'yet get different diet' is the wordplay.
'yet' becomes 'even' (synonyms).
'get different' is an anagram indicator (I've seen this in other clues).
'diet' anagrammed gives 'tide'.
'even'+'tide'='EVENTIDE'
'at' acts as a link.
(Other definitions for eventide that I've seen before include "some time later?" , "The day's close (poetic)" , "late in the day?" , "onset of dusk" , "End of the day (poetic)" .)