Thanks Donna ! I like that 'Don't Worry, Be Happy' approach ;-)....

Dan Barnes
LCI Offices
106 Central Avenue, Suite A
Osseo, MN, 55369-1243
Tel: 763-425-1639 :: Fax: 763-425-5483
Cell: 612-240-2136 :: Pager: 952-394-013
dan.barnes@lci-online.com
dpbarnes@mmm.com


-----Original Message-----
From: hofmeister_donna@yahoo.com [mailto:hofmeister_donna@yahoo.com]
Sent: Wednesday, March 07, 2007 2:16 PM
To: Dan Barnes; HP3000-L@RAVEN.UTC.EDU
Subject: Re: [HP3000-L] Time Zone Change Question

"it depends" :-)

i believe the rate of change (how long it takes for time to become
correct again) depends on the size box you're running. bigger boxes
will become correct faster than slower. i don't remember if system load
plays a (significant) factor or not.

the thing you should tell them is -- don't worry (i'd leave off 'be
happy' :-). the 'fallback' process will not allow any time to be
repeated. they should not have to make any changes.

the following is from help for 'setclock':

Results of the Time Zone Form
If the change in time zone is to a later time (a change to Daylight
Savings Time or an "Eastern" geographic movement), both local time
and the time zone offset are changed immediately.

The effect is that users of local system time will see an immediate
jump forward to the new time zone, while users of Universal Time
will see no change.

If the change in time zone is to an earlier time (a change from
Daylight Savings to Standard Time or a "Western" geographic
movement), the time zone offset is changed immediately. Then the
local time slows down until the system time corresponds to the
time in the new time zone.

The effect is that users of local system time will see a gradual
slowdown to match the new time zone, while users of Universal Time
will see an immediate forward jump, then a slowdown until the
system time again matches "real" Universal Time.

This method of changing time zones ensures that no out-of-sequence
<<<<
time stamps will occur either in local time or in Universal Time.
<<<<

mpe is what unix hopes to be when it grows up ;-) - d

----
Donna Hofmeister, HP-CSA Sr. System Programmer
dgarverick -at- longs -dot- com
925-210-6631 Longs Drug Stores

>>>MY opinions, not Longs Drug Stores'<<<



----- Original Message ----
From: Dan Barnes
To: HP3000-L@RAVEN.UTC.EDU
Sent: Wednesday, March 7, 2007 11:50:26 AM
Subject: Re: [HP3000-L] Time Zone Change Question


BTW, I should have been more specific and state that we use the SETCLOCK
TIMEZONE=W6:00 when this is done.

Dan Barnes
LCI Offices
106 Central Avenue, Suite A
Osseo, MN, 55369-1243
Tel: 763-425-1639 :: Fax: 763-425-5483
Cell: 612-240-2136 :: Pager: 952-394-013
dan.barnes@lci-online.com
dpbarnes@mmm.com

-----Original Message-----
From: HP-3000 Systems Discussion [mailto:HP3000-L@RAVEN.UTC.EDU] On
Behalf Of Dan Barnes
Sent: Wednesday, March 07, 2007 1:48 PM
To: HP3000-L@RAVEN.UTC.EDU
Subject: [HP3000-L] Time Zone Change Question

Hi -L Gang,

I have searched but an unable to find an answer to the specific question
of:

When I change the time BACKWARDS 1 hour in the Fall, how long does that
change take.

We have been asked by our apps folks how long it will take for the time
to be
adjusted in moving back one hour as they wish to adjust their
procedures. I
have not been given other specifics about what they want to do other
than to
get them an answer as to how long the change will take.

TIA,
Dan

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