Which one is correct: What time should I come over? Or At what time should I come over?
At is commonly used as a preposition associated with time. What is also an applicable question when asking about time.
Both are correct and can be used whichever way you need.
What time and At what time, both have the same meaning. The added preposition at does not add anything to the question, and taking it out doesn’t leave it missing anything
What is the Difference Between At Afternoon and In the Afternoon?