If he asks me out for coffee and hasn't set a time/location, should I wait for him to ask?

recently a guy asked me if i wanted to grab coffee, and i said Saturday works, and he said we could talk more details as the day approaches. so far, he hasn't said anything, so i was wondering if i should ask, or if i should wait
If he asks me out for coffee and hasn't set a time/location, should I wait for him to ask?
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