Crossword Genius

Times keeps moving around a third anniversary (8)


I believe the answer is:


'anniversary' is the definition.
(I know that birthday is a type of anniversary)

'times keeps moving around a third' is the wordplay.
'times' becomes 'by' (both can mean 'multiplied by').
'keeps' indicates putting letters inside (inserted letters are kept inside).
'moving around' indicates an anagram.
'athird' is an anagram of 'irthda'.
'by' going around 'irthda' is 'BIRTHDAY'.

(Other definitions for birthday that I've seen before include "when one was delivered" , "Hardy bit (anag)" , "Invisible threads?" , "typically this suit amounts to nothing" , "It comes around once a year" .)

I've seen this clue in The Telegraph.
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