Administrator Guide

Command
History
This guide is platform-specific. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.9(0.0) Introduced on the C9010.
9.2(1.0) Introduced on the Z9500.
8.3.11.1 Introduced on the Z9000.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.1.1.0 Introduced on the E-Series.
Usage
Information
You can change the order of the month and day parameters to enter the time and date as time day
month year. You cannot delete the software clock.
The software clock runs only when the software is up. The clock restarts, based on the hardware clock,
when the switch reboots.
Dell Networking recommends using an outside time source, such as NTP, to ensure accurate time on the
switch.
Example
Dell#clock set 16:20:00 19 may 2001
Dell#
clock summer-time date
Set a date (and time zone) on which to convert the switch to daylight saving time on a one-time basis.
C9000 Series
Syntax
clock summer-time time-zone date start-month start-day start-year start-
time end-month end-day end-year end-time [offset]
To delete a daylight saving time zone configuration, use the no clock summer-time command.
Parameters
time-zone Enter the three-letter name for the time zone. This name is displayed 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-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-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-time Enter the time in hours:minutes. For the hour variable, use the 24-hour format;
example, 17:15 is 5:15 pm.
end-year Enter a four-digit number as the year. The range is from 1993 to 2035.
System Time and Date 1695