The right time to repent? (5)
I believe the answer is:
atone
'repent?' is the definition.
('atone' can be a synonym of 'repent')
'the right time' is the wordplay.
'the right' becomes 'at' (I am not sure about this - if you are sure you should believe this answer much more).
'time' becomes 'one' (I've seen this before).
'at'+'one'='ATONE'
'to' is the link.
Can you help me to learn more?
(Other definitions for atone that I've seen before include "Recompense" , "Turn away from sin and do penance" , "Expiate" , "Make redress" , "Make amends (for something)" .)