Windows 8.1 implements a new feature called quiet hours that will help you out. 7tutorial’s Ciprian Adrian Rusen explains in a recent article that you can select times where Windows will stifle those annoying alerts and even silence Skype calls to keep things quiet. This is great if you’ve got your computer running all night while you sleep or even during work hours when you don’t want to be bothered. If you think this feature is as useful as we do, share it with your friends.
Enable quiet hours in Windows 8.1. Original Source – 7tutorials – Introducing Windows 8.1: What are Quiet Hours & How to Configure Them?