HP 5120 series Configuration Manual page 143

Configuration
1 and 2
[1], 2 and 1
3
1 and 3
System clock configured
date-time ± zone-offset
date-time
If the original system clock is not in
the daylight saving time range, the
system clock configured is the
original system clock.
If the original system clock is in the
daylight saving time range, the
system clock configured is the
original system clock +
"summer-offset".
If "date-time" is not in the daylight
saving time range, the system clock
configured is "date-time".
If "date-time" is in the daylight
saving time range, the system clock
configured is "date-time" +
"summer-offset".
136
Example
Configure: clock datetime 2:00
2007/2/2 and clock timezone
zone-time add 1
System clock configured:: 03:00:00
zone-time Fri 02/02/2007
Configure: clock timezone zone-time
add 1 and clock datetime 3:00
2007/3/3
System clock configured:: 03:00:00
zone-time Sat 03/03/2007
Configure: clock summer-time ss one-off
1:00 2006/1/1 1:00 2006/8/8 2
System clock configured:: 01:00:00
UTC Sat 01/01/2005
Configure: clock summer-time ss one-off
00:30 2005/1/1 1:00 2005/8/8 2
System clock configured:: 03:00:00 ss
Sat 01/01/2005
If the original system clock +
"summer-offset" is not in the daylight
saving time range, the system clock
configured is the original system clock.
After this configuration, if you disable
the daylight saving, the system clock
becomes the system clock minus
"summer-offset".
Configure: clock datetime 1:00
2007/1/1 and clock summer-time ss
one-off 1:00 2006/1/1 1:00
2006/8/8 2
System clock configured:: 01:00:00
UTC Mon 01/01/2007
Configure: clock datetime 8:00
2007/1/1 and clock summer-time ss
one-off 1:00 2007/1/1 1:00
2007/8/8 2
System clock configured:: 10:00:00 ss
Mon 01/01/2007
If "date-time" + "summer-offset".is not in
the daylight saving time range, the
system clock configured is "date-time".
After this configuration, if you disable
the daylight saving, the system clock
becomes the system clock minus
"summer-offset".