What is the cut off time to CONFIRM a date?

If a guy asked you out and you two had a date, what is the cut off point/ hour for him to confirm the date before its too late and you should make other plans/move on?
The day of date - anytime before 3pm is good
The night before, nothing later than that.
The day of, up to an hour before the date.
Two days before or bye.
Select gender and age to cast your vote:
What is the cut off time to CONFIRM a date?
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