Crossword Genius

Movie invitation, a month later (4,9)

Ross

I believe the answer is:

come september

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'movie invitation a month later' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'movie invitation a month later' is the wordplay.
'movie invitation' becomes 'come' (I can't justify this - if you can you should believe this answer much more).
'a month' becomes 'september' (September is an example).
'later' says to put letters next to each other.
'come'+'september'='COME SEPTEMBER'

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I've seen this clue in The Hindu.
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