The logon hours service is new to Windows codename Longhorn. The purpose of this service is to provide restrictions as to when a user is able to login to their computer. This would be useful in disallowing children from using a computer after bedtime hours or from allowing remote users the overnight chance to breach a server at night when there's no sysadmins around. This service can safely be disabled if not in use, but without it the ability to limit logon hours is turned off.
Please visit /tools/services/ for the complete Vernalex.com Services utility.
"He did not move. Eyes shut, he waited, shivering. He heard Travis breathe loud in the room; he heard Travis shift his rifle, click the safety catch, and raise the weapon. There was a sound of thunder." --A Sound of Thunder, Rad Bradbury