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.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
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.
Related
Commands
• clock summer-time recurring — sets a date (and time zone) on which to convert the switch to daylight saving
time each year.
• show clock — displays the current clock settings.
clock summer-time recurring
Set the software clock to convert to daylight saving time on a specific day each year.
C9000 Series
Syntax
clock summer-time time-zone recurring [start-week start-day start-month start-
time end-week end-day end-month 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. You can enter up to eight characters.
start-week
(OPTIONAL) Enter one of the following as the week that daylight saving begins and then
enter values for start-day through end-time:
• week-number: Enter a number from 1 to 4 as the number of the week in the month
to start daylight saving time.
• first: Enter this keyword to start daylight saving time in the first week of the
month.
• last: Enter this keyword to start daylight saving time in the last week of the month.
start-day
Enter the name of the day that you want daylight saving time to begin. Use English three
letter abbreviations; for example, Sun, Sat, Mon, and so on. The range is from Sun to Sat.
start-month
Enter the name of one of the 12 months in English.
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-week
Enter the one of the following as the week that daylight saving ends:
• week-number: enter a number from 1 to 4 as the number of the week to end
daylight saving time.
• first: enter the keyword first to end daylight saving time in the first week of the
month.
• last: enter the keyword last to end daylight saving time in the last week of the
month.
1572 System Time and Date