Check out Microsoft KB article 2570791 for the August 2011 cumulative time zone update for Windows operating systems, just posted this week. (This update supersedes and replaces update 2443685, which was released in December 2010. This update also includes additional time zone changes released as hotfixes after update 2443685 was published.)
The August 2011 DST cumulative update contains revisions for the coming changes in Russia as noted in my previous post, with updates to the UTC offsets and removes DST for the affected Russian time zones as follows:
A new Windows time zone was created, Kaliningrad Standard Time [Display Name "(UTC+3:00) Kaliningrad"]: with the display name "(UTC+3:00) Kaliningrad." This time zone does not observe daylight saving time.
It also includes revisions to the following time zones:
The following changes were made since the previous Windows cumulative time zone update:
Also note: The DST start time and end time for Newfoundland Standard Time [Display Name "(UTC-3:30) Newfoundland"] has been updated from 12:01 A.M. to 2:00 A.M.
For more information about how daylight saving time changes may affect other Microsoft products, click the following article number to view the article in the Microsoft Knowledge Base: 914387 (http://support.microsoft.com/kb/914387/) How to configure daylight saving time for Microsoft Windows operating systems.
So what should you do to make sure that your computers are ready for the change?
Most applications and services reference the underlying Windows operating system for their date and time related rules, with some exceptions. We outline the various software updates to select Microsoft products (including various releases of the Microsoft Windows operating systems, Microsoft Office and other applications) on the Microsoft Daylight Saving Time Help and Support Center. There, we have information and links to updates for various products in mainstream and extended support affected by this change, as well as other various changes to DST offsets and time zones around the world.
If you use Microsoft Update on your PC at home, chances are you're already covered. The latest update – the August 2011 Cumulative Time Zone Update for Windows – may already be installed on your PC if you have turned on Automatic Update in Windows. This ensures you’ll get the latest security and other important updates from Microsoft automatically. This latest update includes the changes for Russia as well as other worldwide changes (including Turkey, Egypt, Morocco, Fiji, Samoa and Newfoundland). If you’re not sure if the update has been applied, visit the Microsoft Update site for more information.
If someone manages your network at work, it’s likely the needed updates are schedule to be deployed to your computers and devices, if they haven’t been installed already.
For IT professionals managing PCs, servers and Microsoft software installations, please visit http://www.microsoft.com/time for more details. Also, visit the support websites of any other software companies to see if you need to apply any updates. It’s not just Microsoft software that may require updates. Additionally, for the change in Russia, we provide specific details and guidance in country at http://support.microsoft.com/gp/cp_dst/ru.
While Microsoft’s Services infrastructure will be updated to reflect DST changes, it's important that your computers -- both clients and servers that interact with these services -- should have the latest Windows cumulative updates for DST and time zone changes applied in order to ensure data integrity.
A holiday nod of thanks to the good folks across our company working on our effort to help manage time (particularly in daylight saving time and time zone changes) -- documented and followed at http://www.microsoft.com/time and over at the blog at http://blogs.technet.com/dst2007 -- and to the folks coordinating the efforts on our daylight saving time and time zone updates and releases for current products across the various product groups at Microsoft. As noted, this is a tough job, to say the least.
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