Anonymous which date are you doing the party or what date are you doing the party. You could say either 'which date' or 'what date'. But in writing you need to start your sentence with a capital letter and since you're asking a question, you need to put a question mark, not a full stop at the end.
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Anonymouswhich date are you doing the party or what date are you doing the party.You could say either 'which date' or 'what date'. But in writing you need to start your sentence with a capital letter and since you're asking a question, you need to put a question mark, not a full stop at the end.