Greater than Time

So i was trying out a new (its new for me) statement regarding Time statement. I want my label to change to another text whenever a certain time arrive.

I created a timer, and labels.

If position.Text = "someone" AndAlso time1.Text > "07:00:00" AndAlso time1.Text < "11:00:00" Then

        sessions.Text = "1st Session"

    End If