You would have thought that with all the chaos going on around him, Pharoah would have asked Moses to stop it “right now!” But the human heart is stubborn. No matter what is before our eyes we want to think we have some control over the situation.
Seems like “today” would have been a better answer.
Exodus 8:8-10 ESV
[8] Then Pharaoh called Moses and Aaron and said, “Plead with the Lord to take away the frogs from me and from my people, and I will let the people go to sacrifice to the Lord.” [9] Moses said to Pharaoh, “Be pleased to command me when I am to plead for you and for your servants and for your people, that the frogs be cut off from you and your houses and be left only in the Nile.” [10] And he said, “Tomorrow.” Moses said, “Be it as you say, so that you may know that there is no one like the Lord our God.
