Church conservators never hosting Eastern anniversary (9)
I believe the answer is:
centenary
'anniversary' is the definition.
(centenary is a kind of anniversary)
'church conservators never hosting eastern' is the wordplay.
'church conservators' becomes 'cent' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'never' becomes 'nary' (I've seen this before).
'hosting' is an insertion indicator.
'eastern' becomes 'e'.
'cent'+'nary'='centnary'
'centnary' enclosing 'e' is 'CENTENARY'.
Can you help me to learn more?
(Other definitions for centenary that I've seen before include "One hundredth anniversary" , "100th anniversary" , "celebration" , "significant anniversary" , "... so celebrating this next month" .)