Reference Guide

Setting the Timezone
Universal time coordinated (UTC) is the time standard based on the International Atomic Time standard, commonly known as
Greenwich Mean time.
When determining system time, include the differentiator between UTC and your local timezone. For example, San Jose, CA is
the Pacific Timezone with a UTC offset of -8.
To set the clock timezone, use the following command.
● Set the clock to the appropriate timezone.
CONFIGURATION mode
clock timezone timezone-name offset
○ timezone-name: enter the name of the timezone. Do not use spaces.
○ offset: enter one of the following:
￭ a number from 1 to 23 as the number of hours in addition to UTC for the timezone.
￭ a minus sign (-) then a number from 1 to 23 as the number of hours.
Dell#conf
Dell(conf)#clock timezone Pacific -8
Dell(conf)#01:40:19: %SYSTEM-P:CP %CLOCK-6-TIME CHANGE: Timezone
configuration changed from "UTC 0 hrs 0 mins" to "Pacific -8 hrs 0
mins"
Dell#
Set Daylight Saving Time
The system supports setting the system to daylight saving time once or on a recurring basis every year.
Setting Daylight Saving Time Once
Set a date (and time zone) on which to convert the switch to daylight saving time on a one-time basis.
To set the clock for daylight savings time once, use the following command.
● Set the clock to the appropriate timezone and daylight saving time.
CONFIGURATION mode
clock summer-time time-zone date start-month start-day start-year start-time end-month
end-day end-year end-time [offset]
○ time-zone: enter the three-letter name for the time zone. This name displays in the show clock output.
○ start-month: enter the name of one of the 12 months in English. You can enter the name of a day to change the order
of the display to time day month year.
○ start-day: enter the number of the day. The range is from 1 to 31. You can enter the name of a month to change the
order of the display to time day month year.
○ start-year: enter a four-digit number as the year. The range is from 1993 to 2035.
○ start-time: enter the time in hours:minutes. For the hour variable, use the 24-hour format; example, 17:15 is 5:15 pm.
○ end-month: enter the name of one of the 12 months in English. You can enter the name of a day to change the order of
the display to time day month year.
○ end-day: enter the number of the day. The range is from 1 to 31. You can enter the name of a month to change the
order of the display to time day month year.
○ end-year: enter a four-digit number as the year. The range is from 1993 to 2035.
○ end-time: enter the time in hours:minutes. For the hour variable, use the 24-hour format; example, 17:15 is 5:15 pm.
○ offset: (OPTIONAL) enter the number of minutes to add during the summer-time period. The range is from 1 to1440.
The default is 60 minutes.
Dell(conf)#clock summer-time pacific date Mar 14 2009 00:00 Nov 7 2009 00:00
Dell(conf)#02:02:13: %SYSTEM-P:CP %CLOCK-6-TIME CHANGE: Summertime configuration changed
System Time and Date
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