Cisco TelePresence Administrator's Manual page 70

Network and system settings
VCS time display and time zone
Local time is used throughout the web interface. It is shown in the system information bar at the bottom of the
screen and is used to set the timestamp that appears at the start of each line in the Event Log.
Internally, the VCS maintains its system time in UTC. It is based on the VCS's operating system time, which
is synchronized using an NTP server if one is configured. If no NTP servers are configured, the VCS uses its
own operating system time to determine the time and date.
Specifying your local Time zone lets the VCS determine the local time where the system is located. It does
this by offsetting UTC time by the number of hours (or fractions of hours) associated with the selected time
zone. It also adjusts the local time to account for summer time (also known as daylight saving time) when
appropriate.
Note that a UTC timestamp is included at the end of each entry in the Event Log.
Cisco VCS Administrator Guide (X7.1) Page 70 of 479