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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
OL-11350-01
Chapter5 Administering the Access PointWireless Device Access
Managing the System Time and Date
The first part of the clock summer-time global configuration command specifies when summer time
begins, and the second part specifies when it ends. All times are relative to the local time zone. The start
time is relative to standard time. The end time is relative to summer time. If the starting month is after
the ending month, the system assumes that you are in the southern hemisphere.
This example shows how to specify that summer time starts on the first Sunday in April at 02:00 and
ends on the last Sunday in October at 02:00:
AP(config)# clock summer-time PDT recurring 1 Sunday April 2:00 last Sunday October 2:00
Beginning in privileged EXEC mode, follow these steps if summer time in your area does not follow a
recurring pattern (configure the exact date and time of the next summer time events):
The first part of the clock summer-time global configuration command specifies when summer time
begins, and the second part specifies when it ends. All times are relative to the local time zone. The start
time is relative to standard time. The end time is relative to summer time. If the starting month is after
the ending month, the system assumes that you are in the southern hemisphere.
To disable summer time, use the no clock summer-time global configuration command.
This example shows how to set summer time to start on October 12, 2000, at 02:00, and end on April 26,
2001, at 02:00:
AP(config)# clock summer-time pdt date 12 October 2000 2:00 26 April 2001 2:00
Step4 show running-config Verify your entries.
Step5 copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 clock summer-time zone date [month
date year hh:mm month date year hh:mm
[offset]]
or
clock summer-time zone date [date
month year hh:mm date month year
hh:mm [offset]]
Configure summer time to start on the first date and end on the second
date.
Summer time is disabled by default.
•For zone, specify the name of the time zone (for example, PDT) to be
displayed when summer time is in effect.
•(Optional) For week, specify the week of the month (1 to 5 or last).
•(Optional) For day, specify the day of the week (Sunday, Monday...).
•(Optional) For month, specify the month (January, February...).
•(Optional) For hh:mm, specify the time (24-hour format) in hours and
minutes.
•(Optional) For offset, specify the number of minutes to add during
summer time. The default is 60.
Step3 end Return to privileged EXEC mode.
Step4 show running-config Verify your entries.
Step5 copy running-config startup-config (Optional) Save your entries in the configuration file.