Basic Operation Guide 2014/02

9 Daylight Saving Time on HP Switches
This information applies to the following HP switches:
• Series 5300xl• Series 3400cl• Series 2500• 212M
• 224M • Series 5400zl• Series 3500• Series 2510
• Series 2600• 1600M • Switch 6108• Series 3500yl
• Series 3600• Series 2610• 2400M • Switch 6200yl
• Series 6400cl• Series 3800• Series 2620• 2424M
• 4000M • Switch 6600• Series 4100gl• Series 2800
•• •Switch 29108000M •Series 4200vl Series 8200zl
• HP AdvanceStack
Switches
• HP AdvanceStack Routers
HP Switches provide a way to automatically adjust the system clock for Daylight Saving Time (DST)
changes. To use this feature, define the month and date to begin and to end the change from
standard time. In addition to the value "none" (no time changes), there are five pre-defined settings,
named:
• Alaska
• Canada and Continental US
• Middle Europe and Portugal
• Southern Hemisphere
• Western Europe
The pre-defined settings follow these rules:
Alaska:
• Begin DST at 2 am on the second Sunday in March.
• End DST at 2 am on the first Sunday in November.
Canada and Continental US:
• Begin DST at 2 am on the second Sunday in March.
• End DST at 2 am on the first Sunday in November.
Middle Europe and Portugal:
• Begin DST at 2 am the first Sunday on or after March 25th.
• End DST at 2 am the first Sunday on or after September 24th.
Southern Hemisphere:
• Begin DST at 2 am the first Sunday on or after October 25th.
• End DST at 2 am the first Sunday on or after March 1st.
Western Europe:
• Begin DST at 2 am the first Sunday on or after March 23rd.
• End DST at 2 am the first Sunday on or after October 23rd.
A sixth option named "User defined" allows you to customize the DST configuration by entering
the beginning month and date plus the ending month and date for the time change. The menu
interface screen looks like this (all month/date entries are at their default values):
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