Clock 127User Guidelines• The system internally keeps time in UTC, so this command is used only for display purposes and whenthe 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 to automaticallyswitch to summer time (daylight saving time). Use the no form of this command to configure thesoftware not to automatically switch to summer time.Syntax• clock summer-time recurring {usa | eu | {week day month hh:mm week day month hh:mm}} [offsetoffset] [zone acronym]• clock summer-time date date month year hh:mm date month year hh:mm [offset offset] [zone acronym]• clock summer-time date month date year hh:mm month date year hh:mm [offset offset] [zone acronym]• no clock summer-time recurring• recurring — Indicates that summer time should start and end on the corresponding specified daysevery year.• date — Indicates that summer time should start on the first specific date listed in the commandand 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)• hh:mm — Time in military format, in hours and minutes. (Range: hh: 0 - 23, mm:0 - 59)• offset — Number of minutes to add during summer time. (Range: 1 - 1440)• acronym — The acronym of the time zone to be displayed when summer time is in effect. (Range:Up to 4 characters)Console(config)# clock timezone -6 zone CSTbook.book Page 127 Thursday, December 18, 2008 7:40 PM
