C
HAPTER
20
| System Management Commands
Time
– 758 –
clock summer-time
(predefined)
This command configures the summer time (daylight savings time) status
and settings for the switch using predefined configurations for several
major regions in the world. Use the no form to disable summer time.
SYNTAX
clock summer-time name predefined [australia | europe | new-
zealand | usa]
no clock summer-time
name - Name of the timezone while summer time is in effect,
usually an acronym. (Range: 1-30 characters)
DEFAULT SETTING
Disabled
COMMAND MODE
Global Configuration
COMMAND USAGE
â—† In some countries or regions, clocks are adjusted through the summer
months so that afternoons have more daylight and mornings have less.
This is known as Summer Time, or Daylight Savings Time (DST).
Typically, clocks are adjusted forward one hour at the start of spring
and then adjusted backward in autumn.
â—† This command sets the summer-time time relative to the configured
time zone. To specify the time corresponding to your local time when
summer time is in effect, select the predefined summer-time time zone
appropriate for your location, or manually configure summer time if
these predefined configurations do not apply to your location (see clock
summer-time (date) or clock summer-time (recurring).
EXAMPLE
Console(config)#clock summer-time MESZ predefined europe
Console(config)#
RELATED COMMANDS
show sntp (752)
Table 60: Predefined Summer-Time Parameters
Region Start Time, Day,
Week, & Month
End Time, Day,
Week, & Month
Rel. Offset
Australia 00:00:00, Sunday,
Week 5 of October
23:59:59, Sunday,
Week 5 of March
60 min
Europe 00:00:00, Sunday,
Week 5 of March
23:59:59, Sunday,
Week 5 of October
60 min
New Zealand 00:00:00, Sunday,
Week 1 of October
23:59:59, Sunday,
Week 3 of March
60 min
USA 00:00:00, Sunday,
Week 2 of March
23:59:59, Sunday,
Week 1 of November
60 min
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