Privilege Requirement 
Only Admin and Operator level users have access to these commands. 
Example 
Configure the daylight saving time as USA standard: 
T2500G-10TS(config)#system-time dst predefined USA 
21.4  system-time dst date 
Description 
The  system-time dst date  command is used to configure the one-off 
daylight saving time. The start date is in the current year by default. The time 
range of the daylight saving time must shorter than one year, but you can 
configure it spanning years.  To disable DST function, please use  no 
system-time dst command. 
Syntax 
system-time dst date { 
smonth 
} { 
sday 
} { 
stime 
} { 
emonth 
} { 
eday 
} { 
etime 
} 
[ 
offset 
] 
Parameter 
smonth
 —— Month to start, with the options: Jan, Feb, Mar, Apr, May, Jun, 
Jul, Aug, Sep, Oct, Nov, Dec 
sday —— 
Day to start, ranging from 1 to 31. Please mind that the number of 
days depends on the month.   
stime
 —— Time to start, in the format of hh:mm. 
emonth
 —— Month to end, with the options: Jan, Feb, Mar, Apr, May, Jun, Jul, 
Aug, Sep, Oct, Nov, Dec 
eday
 —— Day to end, ranging from 1 to 31. Please mind that the number of 
days depends on the month.   
etime
 —— Time to end, in the format of hh:mm. 
offset
  ——  Specify the time adding in minutes when Daylight Saving Time 
comes. The value ranges from 1 to 1440 and the default value is 60 minutes. 
It is optional. 
Command Mode 
Global Configuration Mode 
Privilege Requirement 
Only Admin and Operator level users have access to these commands. 
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