Lord Of The Rings Online: Scheduled Downtime: Monday, July 23 8:00AM to 1:00PM EDT (-5 GMT)

From the launcher and the official forums:

The LOTRO Game Servers and http://myaccount.turbine.com/ will be offline for maintenance on Monday, July 23 from 8:00AM to 1:00PM EDT (-5 GMT). Thanks for your patience, and we'll see you back in the game soon!