1. The user is asking about the permission request time stamp starting at 8:00 am and wants to know until when it lasts. 2. This is not a math problem but a question about time duration or scheduling. 3. Since no specific duration or end time is given, we cannot calculate an exact end time. 4. To answer this properly, we need the duration or the end time of the permission request. 5. Please provide the duration or the end time to determine the permission request time stamp period.