You must know you've been scheduled to have an operation the day after   Yes . But I don't know the exact time .   The operation starts at 10 0 ' clock . But you'll get an injection of anaesthesia about 30 to 45 minutes in advance . If your family comes to see you before the operation , they should come before 8: 30 .   Oh , I see . I will tell my wife . Thank you for telling me so much .   It's nothing . Did your doctor explain to you about what operation you are going to have ? 