User's Manual

Table Of Contents
Configuration Guide of XGS-5240-Series
70-1
Chapter 70 Summer Time
Configuration
70.1 Introduction to Summer Time
Summer time is also called daylight saving time, it is a time system for saving ene
rgy sources. In summer the time is advanced 1 hour to keep early hours, reduce the li
ghting, so as to save electrolighting. The rule that adopt summer time is different in ea
ch country. At present, almost 110 countries implement summer time.
Compare with the standard time, usually set summer time 1 hour late, for example,
when summer time is implementing, 10:00 am of the standard time is considered 11:0
0 am of summer time.
70.2 Summer Time Configuration Task Sequence
1. Configure absolute or recurrent time range of summer time
Command
Explanation
Global Mode
clock summer-time <word> absolute <H
H:MM> <YYYY.MM.DD> <HH:MM> <YYY
Y.MM.DD> [<offset>]
no clock summer-time
Set absolute time range of summer time,
start and end summer time is configured
with specified year.
clock summer-time <word> recurring <H
H:MM> <MM.DD> <HH:MM> <MM.DD> [<
offset>]
no clock summer-time
Set recurrent time range of summer time,
every year the summer time begins from t
he start time and end at the end time.
clock summer-time <word> recurring <H
H:MM> <week> <day> <month> <HH:M
M> <week> <day> <month> [<offset>]
no clock summer-time
Set recurrent time range of summer time,
every year the summer time begins from t
he start time and end at the end time.