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Setting the System Clock Managing System Files
page 2-38 OmniSwitch 6600 Family Switch Management Guide March 2005
Enabling DST
When Daylight Savings Time (DST) is enabled, the switch’s clock will automatically set the default DST
parameters for the time zone specified on the switch or for the custom parameters you can specify with the
system daylight savings time start command. In this case, it is not necessary to change the time setting
on the switch when your time zone changes to and from DST. To verify the DST parameters for your
switch, use the system daylight savings time command. A screen similar to the following will display:
-> system daylight savings time
Daylight Savings Time (DST) is DISABLED.
PST: (Coordinated Universal Time) UTC-8 hours
Daylight Savings Time (DST):
DST begins on the first sunday in april (4/7) at 2:00
DST ends on the last sunday in october (10/27) at 2:00
DST will change the time by +/- 1:00 hour(s)
The second line in the above display indicates the Enabled/Disabled status of the DST setting on the
switch. The last three lines describe the date and time parameters for the selected time zone or the custom
parameters set with the CLI. To enable daylight savings time use the following command:
-> system daylight savings time enable
Note. If your time zone shows “No default” in the “Time Zone and DST Information Table” below under
the DST parameters, refer to “Daylight Savings Time Configuration” on page 2-37 for information on
configuring and enabling DST.
The following table shows a list of supported time zone abbreviations and DST parameters.
Time Zone and DST Information Table
Abbreviation Name
Hours from
UTC DST Start DST End DST Change
nzst New Zealand +12:00 1st Sunday in Oct. at
2:00 a.m.
3rd Sunday in Mar.
at 3:00 a.m.
1:00
zp11 No standard name +11:00 No default No default No default
aest Australia East +10:00 Last Sunday in Oct.
at 2:00 a.m.
Last Sunday in Mar.
at 3:00 a.m.
1:00
gst Guam +10:00 No default No default No default
acst Australia Central
Time
+09:30 Last Sunday in Oct.
at 2:00 a.m.
Last Sunday in Mar.
at 3:00 a.m.
1:00
jst Japan +09:00 No default No default No default
kst Korea +09:00 No default No default No default
awst Australia West +08:00 No default No default No default
zp8 China;
Manila, Philippines
+08:00 No default No default No default
zp7 Bangkok +07:00 No default No default No default
zp6 No standard name +06:00 No default No default No default
zp5 No standard name +05:00 No default No default No default
zp4 No standard name +04:00 No default No default No default
msk Moscow +03:00 Last Sunday in Mar.
at 2:00 a.m.
Last Sunday in Oct.
at 3:00 a.m.
1:00