Setting the System Date and Time
Page 9-9
3) Timezone
This parameter specifies the time zone for the switch and sets the system clock to run on UTC
time (or Greenwich Mean Time). Additionally, if Daylight Savings Time is enabled (see option
4 below), the clock automatically sets up default DST parameters (if applicable) for the local
time zone. The local time remains active for all User Interface commands and other
subsystems that require the local time. To set the time zone for the switch, you may use one
of two methods:
a. Enter the line number for Timezone (3) followed by the hour(s) offset from UTC. This can
be a number from -13 to +12. The number you enter will set the system clock x hours from
the local time. For example, if the local time, 1:45:00, is seven hours behind UTC time, you
would enter:
3=-7
This specification sets the UTC time to 8:45:00, seven hours ahead of the local time, 1:45:00.
b. Enter the line number for Timezone (3) followed by the time zone name. There is a limited
number of time zone names available. For example, if the local time zone name is Moun-
tain Standard Time (MST), you would enter:
3=MST
This specification automatically sets the switch to -7 hours, the number of hours MST is offset
from UTC.
Daylight Savings Time. The software will automatically configure DST values for a specified time
zone. However, the user can manually modify DST values.
Non-integer Offsets. Non-integer offsets are acceptable for Timezone. Some parts of the world
are offset from UTC by increments of 15, 30, or 45 minutes. India, for example, is offset from
UTC by 5 hours and 30 minutes. If you wanted to enter the time zone offset for India, for
example, you would type the line number for Timezone (3), followed by the non-integer
hour offset in the HH:MM format, as follows:
3=05:30
where the value of 05:30 is five hours and thirty minutes offset from UTC.
♦ Note ♦
The switch automatically enables UTC. However, if you
do not want your system clock to run on UTC, simply
enter the offset +0 for the Timezone parameter. This sets
UTC to run on local time.
The table on the following page lists the options available for Timezone names: