Command Manual – System Management 
Quidway S8500 Series Routing Switches  Chapter 4  System Maintenance Commands
 
Huawei Technologies Proprietary 
4-2 
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Parameter 
zone-name: Name of the summer time, which is a string with the length ranging 1 to 32 
characters. 
one-off: Only set the summer time of a certain year. 
repeating: Set the summer time of every year starting from a certain year. 
start-time: Set start time of the summer time, input like HH:MM:SS 
(hour/minute/second). 
start-date: Set start date of the summer time,  input like YYYY/MM/DD 
(year/month/day). 
end-time: Set end time of the summer time, input like HH:MM:SS 
(hour/minute/second). 
end-date: Set end date of the summer time, input like YYYY/MM/DD (year/month/day). 
offset-time: Set offset time of the summer time, input like HH:MM:SS 
(hour/minute/second). 
Description 
Use the clock summer-time command to set the name, starting and ending time of the 
summer time. 
Use the undo clock summer-time command to remove the configuration of the 
summer time.  
After the configuration takes effect, the display clock command can be used to check 
it. Besides, the time of the log or Debugging information uses the local time after the 
adjustment of the time zone and summer time. 
Related command: clock timezone. 
Example 
# Set the summer time for z2 that starts at 06:00:00 on 08/06/2002 and ends at 
06:00:00 on 01/09/2002 with the time adding 1 hour. 
<Quidway> clock summer-time z2 one-off 06:00:00 2002/06/08 06:00:00 2002/09/01 
01:00:00 
# Set the summer time for z2 that starts at 06:00:00 on 08/06 and ends at 06:00:00 on 
01/09 in each year from 2002 on with the time adding 1 hour. 
<Quidway> clock summer-time z2 repeating 06:00:00 2002/06/08 06:00:00 
2002/09/01 01:00:00