[VoIP] DST change in Windows

[Lee Spenadel]

Chad's approach works too.  For those who just want the patch for XP (I've
posted it in the past):

http://www.microsoft.com/downloads/details.aspx?familyid=66F1420C-DF2D-400B-
A8A9-EF9061A9A3CA&displaylang=en

Windows Validation is required. 

Lee


-----Original Message-----
From: voip-bounces at ckts.info [mailto:voip-bounces at ckts.info] On Behalf Of
Chad Perkins
Sent: Sunday, April 08, 2007 2:54 PM
To: Voice Over IP Tandem for Analog Switches
Subject: [VoIP] DST change in Windows

 I appreciate the fact that Steph has played "time" monitor (DST and
otherwise) on a 
number of lists.  Having peoples clocks reasonably correct help the list(s)
run 
smoothly.  A lot of people, would be unaware that something was amiss,
myself 
included, if Steph hadn't pointed it out (he caught me with a out of whack
clock 
before on another list before the DST crap came to be).  

However,

On 6 Apr 2007 at 15:47, Steph Kerman wrote:
[snip]
> One needs to turn off auto-adjustment by unchecking the box and if
> correcting manually one needed to bump the time zone and then correct
> the time setting.
> Steph

Fix it, disabling DST is not the answer.  There has been a MS tool called 
TZEDIT.EXE that has been around since atleast windows 98 that "fixes" this
problem 
without the MS "patch".

There are two versions of TZEDIT, one for Windows 9x, one for XP/2000/NT(?).
So 
there is no reason that anyone shouldn't be able to fix this problem.  I
have used 
TZEDIT, I believe successfully, on all of my machines both at work and at
home (XP 
SP1, ME, 98SE, 95A and 95B none of which appear to be patchable).  Steph,
can 
you confirm if this message is properly "dated" ? 

Download the appropriate TZEDIT.EXE and run it (there is no installer).  
Select your timezone.  
Click Edit.  
Set 'Start Day' to Second Sunday of March
Set 'Last Day' to First Sunday of November.
(leave/turn 'Automatically set DST on)
Click 'OK'.
Click 'Close' and you are done (assuming other aspects of your time settings
haven't 
been already mucked up, in which case you'd have to undo that).

Failing to fix the DST definition WILL cause future failures of correct time
unless you 
plan on manually correcting the clock every March and November for the rest
of your 
life, or have some other program sync the time all the time.

While I am not an expert in this department, but I have been told that NTP
uses delta 
UTC and thus relies on the client to correctly interpret the offset.  As
such it is my 
understand that using NTP won't fix this (but it would be accurately "off"
by an hour 
one way or another).

Chad
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