Correction: According to KB914387, only Windows Vista uses Dynamic DST.
So, a lot of the entries in the registry settings provided by M$ don't apply
to Windows 2000 (including the two year limitation mentioned in an article I
found on Google).
Stefan John Ozminski writes:
> Following the leads in previous emails, I looked up some more specific
> information.
>
> The Knowledge Base article http://support.microsoft.com/kb/914387/en-us
> mentions the Time Zone Editor, and tzedit.exe, but it does not mention
> that the tool is a resource kit tool. The Time Zone Editor is in the
> Windows 2000 Resource Kit. It is available as a separate download at
> http://support.microsoft.com/kb/927229
>
> The Time Zone Editor will help you manually make the necessary edits to a
> time zone as Brian Hoort mentioned, but one time zone at a time.
>
> At least one article suggested you might want to update time zone
> information for more than your local time zone in case applications make
> calculations related to other time zones.
>
> I found one third party tool at http://www.intelliadmin.com/Downloads.htm
> The download file is DaylightSavingFix.exe. The notes on the website
> implied that they just apply the registy settings documented by Microsoft,
> limiting the updates to US time zones. I don't know if this is the same
> tool that Brian mentioned or not. The tool is very small (751k). If you
> run it interactively, the dialog unobtrusively advertises other
> IntelliAdmin tools. I ran a quick test, and it updated the registry as I
> expected. If it mucked around with anything else, it did it very quickly
> (on my slow computer, 500Mhz). They provide silent install and uninstall
> with the commandline options /qinstall and /quninstall. The uninstall
> option restores standard (US TZ) Windows 2000 registry settings, not
> settings made by tzedit.exe that were already in the registry at the time
> the daylightsavingfix.exe tool was run.
>
> I also noticed in the article KB914387 that the Microsoft registry update
> uses Dynamic DST and only covers 2006 and 2007 for EST. Another article I
> saw said Windows, including Vista, only handles Dynamic DST for two years,
> which means any Windows 2000 machines that haven't retired by 2008 will
> need to have their TZ registry settings updated again.
>
> The DaylightSavingFix.exe tool does not use Dynamic DST (and TZedit.exe
> can't modify Dynamic DST settings). The registry settings made by
> DaylightSavingFix.exe would also apply to 2008, as long as the DST start
> is still the second Sunday in March and the end is the first Sunday in
> November.
>
> -Stefan
>
> Stefan Ozminski
> Computer Services
> W.K. Kellogg Biological Station
> Michigan State University
> 199-4427 (from campus)
>
>
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