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The switch also supports the following time configuration settings:
ï‚·
Time Zone
—
Allows you to specify the offset from Coordinated Universal Time (UTC).
ï‚·
Summer Time/Daylight Saving Time
(DST)
— In some regions, the time shifts by one hour in
the fall and spring. The switch supports manual entry of one-time or recurring shifts in the
time.
6.4.1. Manual Time Configuration
The example in this section shows how to manually configure the time, date, time zone, and summer time
settings for a switch in Hyderabad, India.
1. Set the date and time. The system clock uses a 24-hour clock, so 6:23 PM is entered as 18:23:00, the
date is April 30, 2012.
(QCT) #calendar set 04/30/2012 18:23:00
2. Configure the time zone. In this example, the time zone is India Standard Time (IST), which is UTC +5
hours and 30 minutes.
(QCT) (Config)#clock timezone 5 minutes 30 zone IST
3. Configure the offset for a hypothetical daylight saving time. In this example, the offset is one hour. It
occurs every year on Sunday in the first week of April and ends the fourth Sunday in October. The start and
end times are 2:30 AM, and the time zone is India Standard Summer Time (ISST).
(QCT) (Config)#clock summer-time recurring 1 sun apr 02:30 4 sun oct 02:30 offset 60 zone ISST
(QCT) (Config)#exit
4. View the clock settings.
(QCT) #show calendar detail
00:40:08 ISST(UTC+6:30) May 28 2012
No time source
Time zone:
Acronym is IST
Offset is UTC+5:30
Summertime:
Acronym is ISST
Recurring every year
Begins at first Sunday of Apr at 02:30
Ends at fourth Sunday of Oct at 02:30
offset is 60 minutes
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