Clock 121D E L L C O N F I D E N T I A L – P R E L I M I N A R Y 9 / 1 3 / 0 6 – F O R P R O O F O N LYUser Guidelines• The system internally keeps time in UTC, so this command is used only for display purposesand when the time is manually set.ExamplesThe following example sets the timezone to 6 hours difference from UTC.clock summer-timeThe clock summer-time Global Configuration mode command configures the system toautomatically switch to summer time (daylight saving time). To configure the software not toautomatically switch to summer time, use the no form of this command.Syntaxclock summer-time recurring {usa | eu | {week day month hh:mm week day month hh:mm}}[offset offset] [zone acronym]clock summer-time date date month year hh:mm date month year hh:mm [offset offset] [zoneacronym]clock summer-time date month date year hh:mm month date year hh:mm [offset offset] [zoneacronym]no clock summer-time recurring• recurring — Indicates that summer time should start and end on the correspondingspecified days every year.• date — Indicates that summer time should start on the first specific date listed in thecommand and end on the second specific date in the command.• usa — The summer time rules are the United States rules.• eu — The summer time rules are the European Union rules.• week — Week of the month. (Range: 1 - 5, first, last)• day — Day of the week (Range: first three letters by name, like sun)• date — Date of the month. (Range:1 - 31)• month — Month. (Range: first three letters by name, like Jan)• year — Year - no abbreviation (Range: 2000 - 2097)Console(config)# clock timezone -6 zone CST
