A post about the latest daylight saving time and time zone update for Windows that goes live next week...

At Microsoft, we have processes to track changes to daylight saving time (DST) and time zone (TZ) around the world, and we provide updates to Windows and other products. (See my previous post, Advisory- New Daylight Saving Time and Time Zone updates available for Windows.)  The most recent cumulative packages for Windows have now been released to the Download Center for supported versions of XP, Window Server 2003, Vista and Server 2008.

For information detailing the changes in this update please visit: http://support.microsoft.com/kb/951072.  I expect that the above packages will be pushed out on Windows Update beginning next week as a part of the normal update process for Windows.

A little history:

If you follow this blog and our DST & TZ Website (conveniently located at http://www.microsoft.com/time) you may recall my previous post that product teams are moving to a semi-annual update cadence, following the Windows regular cadence for publishing newly legislated DST rules and time zone updates. These semi-annual "Cumulative DST and Time Zone Updates" will be released in November/ December (to the Download Centre and via Windows Update respectively) for the coming calendar year, and we'll also provide for a semi-annual update in the July/August timeframe when needed. 

For each, the window closes for additional updates a few months (generally four to six) prior to the release date.  Our goal is that sysadmins and IT Pros can plan on rolling out and installing/ deploying these cumulative update roll-ups as they are published.

Knowledge Base article http://support.microsoft.com/kb/914387 "How to configure daylight saving time for Microsoft Windows operating systems" reflects the manual changes and additions DST and TZ.  KB 914387 should contain all DST changes made since RTM.

We expect quite a bit of interest in the upcoming cumulative DST and TZ updates. 

What should you do?

In most cases -- for consumers and small businesses -- wait for the latest update to be automatically installed on your computer.  Sysadmins and IT professionals can download the latest packages for distribution to their users.

Other Microsoft products that are impacted may also schedule updates to accommodate some of these changes.  For the latest updates on each of these products, please visit http://support.microsoft.com/gp/dst_prodlist for the latest information.

For details on setting up RSS feeds for these pages, see my post on getting RSS feed updates.

Tags: Microsoft, Daylight Saving Time, Daylight Savings Time, RSS, DST.

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