Dominion with time for celebration (6,3)
I believe the answer is:
canada day
'celebration' is the definition.
I don't know anything about this answer so I can't judge whether it can be defined by this definition.
'dominion with time' is the wordplay.
'dominion' becomes 'canada' (I am not sure about this - if you are sure you should believe this answer much more).
'with' means one lot of letters go next to another.
'time' becomes 'day' (day is a kind of time).
'canada'+'day'='CANADA DAY'
'for' is the link.
Can you help me to learn more?
(Another definition for canada day that I've seen is " when the Dominion celebrates".)