Silent Time puts my phone to sleep and wakes it up just in time!

Silent Time is just the perfect app for Android. At 10 PM it puts it in silent mode and at 7:30 it returns it to daytime mode.

Simple and effective. Steve

•  Silent Time - Android Apps on Google Play
• App Review: Silent Time for Android - YouTube
• Silent Time Automatically Silences Your Android Phone Based On Time of Day
• For more power this paid app  may be too much of a good thing : Tasker - Android Apps on Google Play