Sony Entertainment announced that PSN will be closed on Monday, May 11 for maintenance. The service won’t be available for almost ten hours, which is a bit longer than usually. The maintenance will start at 7:30pm PDT/ 2:30am GMT and it will end on Tuesday, at 5:am PDT/ 12:00pm GMT.
As you probably know, you will be able to play online games only if your last log in was at least 24 hours before the time scheduled. The PSN account management, PS Store and OS Video won’t be accessible.