Do you have the dock? If yes, you can use "Smart Connect". It allows you to make several profiles for when you dock/undock, like "From 23:00 -.06:00 set to silent" or "Publish a status update on facebook at 08:30", or even "Connect to the wireless speaker across the room at 09:00 using bluetooth". It's much like "Tasker" actually.
Either way, there are third party apps on the Play Store that does allow you to make a DND profile.