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Dell EMC Configuration Guide for the S3100 Series 9.14.2.4

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Setting Recurring Daylight Saving Time

Set a date (and time zone) on which to convert the switch to daylight saving time on a specific day every year.

If you have already set daylight saving for a one-time setting, you can set that date and time as the recurring setting with the clock summer-time time-zone recurring command.

To set a recurring daylight saving time, use the following command.

Set the clock to the appropriate timezone and adjust to daylight saving time every year.
CONFIGURATION mode
clock summer-time time-zone recurring start-week start-day start-month start-time end-week end-day end-month end-time [offset]
  • time-zone: Enter the three-letter name for the time zone. This name displays in the show clock output.
  • 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 the keyword first to start daylight saving time in the first week of the month.
    • last: Enter the keyword last to start daylight saving time in the last week of the month.
  • 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-week: If you entered a start-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 in the month to start daylight saving time.
    • first: Enter the keyword first to start daylight saving time in the first week of the month.
    • last: Enter the keyword last to start daylight saving time in the last week of the month.
  • 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.

Examples of the clock summer-time recurring Command

The following example shows the clock summer-time recurring command.

DellEMC(conf)#clock summer-time pacific recurring Mar 14 2009 00:00 Nov 7 2009 00:00 ?
DellEMC(conf)#02:02:13: %RPM0-P:CP %CLOCK-6-TIME CHANGE: Summertime configuration changed from
"none" to "Summer time starts 00:00:00 Pacific Sat Mar 14 2009;Summer time ends 00:00:00 pacific
Sat Nov 7 2009"
NOTE If you enter <CR> after entering the recurring command parameter, and you have already set a one-time daylight saving time/date, the system uses that time and date as the recurring setting.

The following example shows the clock summer-time recurring parameters.

DellEMC(conf)#clock summer-time pacific recurring ?
<1-4>     Week number to start
first     Week number to start
last      Week number to start
<cr>
DellEMC(conf)#clock summer-time pacific recurring
DellEMC(conf)#02:10:57: %RPM0-P:CP %CLOCK-6-TIME CHANGE: Summertime configuration changed from
"Summer time starts 00:00:00 Pacific Tue Mar 14 2017 ; Summer time ends 00:00:00 pacific Tue Nov
7 2017" to "Summer time starts 02:00:00 Pacific Tue Mar 14 2017;Summer time ends 02:00:00 pacific
Tue Nov 7 2017"

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