RelatedCommandscalendar set – sets the hardware clock.clock summer-time recurring – sets a date (and time zone) on which to convert the switch todaylight saving time each year.show clock – displays the current clock settings.clock summer-time recurringSet the software clock to convert to daylight saving time on a specific day each year.C-Series, E-Series, S-Series, Z-Series, S4810Syntax clock summer-time time-zone recurring [start-week start-daystart-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-timecommand.Parameterstime-zone Enter the three-letter name for the time zone. This name is displayedin the show clock output. You can enter up to eight characters.start-week (OPTIONAL) Enter one of the following as the week that daylightsaving begins and then enter values for start-day through end-time:• week-number: Enter a number from 1 to 4 as the number ofthe week in the month to start daylight saving time.• first: Enter this keyword to start daylight saving time in thefirst week of the month.• last: Enter this keyword to start daylight saving time in thelast 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,etc. The range is 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-hourformat; 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 ofthe week to end daylight saving time.• first: enter the keyword first to end daylight savingtime in the first week of the month.• last: enter the keyword last to end daylight saving time inthe last week of the month.1429
