The LogFileLocaltimeRollover property specifies IIS log file rollover behavior for W3C Extended logging. If the property is set to false, the default rollover behavior will be in effect, meaning a new log file will be created based on Coordinated Universal Time (UTC), not local time. If this property is set to true, a new log file will be created based on local time, not UTC. UTC was formerly called Greenwich Mean Time, or GMT.
Regardless of the setting, the time stamp for each W3C Extended Logging log record is UTC-based.
Client: Requires Windows XP Professional, Windows 2000 Professional, or Windows NT Workstation 4.0.
Server: Requires Windows Server 2003, Windows 2000 Server, or Windows NT Server 4.0.