Sony has announced that the PlayStation Network will be undergoing maintenance on Monday, October 13th 2014, until the early hours of Tuesday. The maintenance window will disrupt your evening gaming session, as the maintenance starts from 6pm BST, and will last until 1am. Sony hasn’t given any indication on what the maintenance will involve, but PSN access will be unavailable.
You will be able to play online as long as you’re signed in before the start of the maintenance, otherwise you’ll have to concentrate on those single player games.