Crossword Genius

A game is set up, oddly, for a day in church (12)

Ross

I believe the answer is:

septuagesima

'a day in church' is the definition.
(term for the ninth Sunday before Easter)

'a game is set up oddly' is the wordplay.
'oddly' indicates anagramming the letters.
'a'+'game'+'is'+'set'+'up'='agameissetup'
'agameissetup' anagrammed gives 'SEPTUAGESIMA'.

'for' is the link.

I've seen this clue in The Times.
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