Planning due date, question below

Is it wrong to try and would you try and plan your babies due date, I know that it's impossible to do, but would you avoid ttc certain months to avoid certain due dates? I've heard that August isn't a good month for babies to be born and I don't want a Christmas Day baby as I want them to have a birthday separate to Christmas Day. 🙂
Please comment of reasons and what months you would avoid. 

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