CLI Reference Guide-R04

Chapter 4 | System Management Commands
Time
– 171 –
Related Commands
show sntp (165)
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
◆ 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.
◆ 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).
Table 26: 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