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System Time and Date
The commands in this chapter configure time values on the system, either using the Dell Networking
operating software, or the hardware, or using the network time protocol (NTP). With NTP, the switch can
act only as a client to an NTP clock host.
For more information, refer to the “Network Time Protocol” section of the Management chapter in the
Dell Networking OS Configuration Guide.
The commands in this chapter are generally supported on Dell Networking OS with some exceptions, as
notes in the Command History fields.

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.
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.
1566 System Time and Date