Support for Windows Vista Service Pack 1 (SP1) ended July 12, 2011. To continue receiving security updates for Windows, make sure that you are running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft webpage:
Support is ending for some versions of Windows
Important 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. If you have already deployed update 2443685, read the descriptions of the specific time zone changes that are addressed in this article to determine whether you must deploy this update immediately. If systems are not directly affected, you can schedule deployment at the next available opportunity. We recommend that you deploy the most current Windows cumulative time zone update to guarantee the consistency of the time zone database on all systems. Important
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Before you apply the update that is described in this article, be aware of potential issues that may affect Microsoft Outlook. For more information about these issues, view the article in the Microsoft Knowledge Base:
931667 How to address time zone changes by using the Time Zone Data Update Tool for Microsoft Office Outlook
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If you are running Microsoft Exchange Server in an Information Technology (IT) environment, you must take additional measures to guarantee the correct operation of Exchange Server. For more information about the Exchange daylight saving time (DST) update, view the article in the Microsoft Knowledge Base:
941018 How to address daylight saving time by using the Exchange Calendar Update Tool
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Cumulative time zone updates contain only data that has changed for a specific region or that was added to maintain parity with other operating system versions. Therefore, if a time zone key is deleted, some original values may not be restored after you apply the cumulative zone update.We do not recommend that you delete any registry keys that are related to time zones. On a computer that has incomplete time zone keys, first restore the time zone keys from a known good backup. Then, apply the update.
Introduction
The update that this article describes changes the time zone data to accommodate daylight saving time (DST) changes in several countries. The update that this article describes is a cumulative update rollup that includes the changes previously released as hotfixes in Microsoft Knowledge Base (KB) articles 2543367, 2523087, 2519231 and 2515337. This cumulative update also includes additional fixes not included in previous released hotfixes. For more information about how DST changes may affect other Microsoft products, visit the following Microsoft website:
http://support.microsoft.com/gp/cp_dstFor more information about how daylight saving time changes may affect other Microsoft products, view the following article in the Microsoft Knowledge Base:
914387 How to configure daylight saving time for Microsoft Windows operating systems Note When you apply this update, you may receive the following message:
Update cannot be installed as a newer or same time zone update has already been installed on the system.
This message indicates that you have already applied the correct update or that Windows Updates or Microsoft Update has automatically installed this update. No additional action is required to update the Windows operating system.
To get the stand-alone package for this update, go to the Microsoft Update Catalog website.
For more information about how to download Microsoft support files, view the following article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
Updates from the previous cumulative Windows time zone update
The following changes were made since the previous Windows cumulative time zone update:
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Turkey Standard Time: A new Windows time zone was created: Turkey Standard Time. The display name is "(UTC+2:00) Istanbul." The government of Turkey has decided to change the 2011 DST schedule. It will start on Monday March 28 instead of Sunday March 27. "Istanbul" was removed from the display name of the "(UTC+2:00) Athens, Bucharest, Istanbul" time zone.
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Egypt Standard Time [Display Name "(UTC+2:00) Cairo"]: The government of Egypt has canceled daylight saving time.
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Pacific SA Standard Time [Display Name "(UTC-4:00) Santiago"]: Sets the 2011 DST start date to occur in August and the 2012 end date to occur in March.
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Morocco Standard Time [Display Name "(UTC) Casablanca"]: Sets the 2011 DST end date to occur in July.
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Fiji Standard Time [Display Name "(UTC+12:00) Fiji"]: Sets the 2011 DST end date to occur on the first Sunday in March.
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Samoa Standard Time [Display Name "(UTC-11:00) Samoa"]: Sets the 2011 DST end time to occur one hour later.
|
Time zone key name |
Display name |
2011 DST start |
2011 DST end |
TZI subkey |
|---|---|---|---|---|
|
Turkey Standard Time |
(UTC+2:00)Istanbul |
Last Monday in March 03:00:00.000 |
Last Sunday in October 04:00:00.000 |
"TZI"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,0a,00,00,00,05,00,04,00,00,00,00,00,00,00,00,00,03,00,01,00,05,00,03,00,00,00,00,00,00,00 |
|
Egypt Standard Time |
(UTC+02:00) Cairo |
None |
None |
"TZI"=hex:88,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
Pacific SA Standard Time |
(UTC-04:00)Santiago |
Third Saturday in August 23:59:59.999 |
First Saturday in May 23:59:59.999 |
"TZI"=hex:f0,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,05,00,06,00,01,00,17,00,3b,00,3b,00,e7,03,00,00,08,00,06,00,03,00,17,00,3b,00,3b,00,e7,03 |
|
Morocco Standard Time |
(UTC)Casablanca |
First Saturday in April 23:59:59.999 |
Last Saturday in July 23:59:59.999 |
"TZI"=hex:00,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,07,00,06,00,05,00,17,00,3b,00,3b,00,e7,03,00,00,04,00,06,00,01,00,17,00,3b,00,3b,00,e7,03 |
|
Fiji Standard Time |
(UTC+12:00)Fiji |
Fourth Sunday in October 02:00:00.000 |
First Sunday in March 03:00:00.000 |
"TZI"=hex:30,fd,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,03,00,00,00,01,00,03,00,00,00,00,00,00,00,00,00,0a,00,00,00,04,00,02,00,00,00,00,00,00,00 |
|
Samoa Standard Time |
(UTC-11:00)Samoa |
Last Sunday in September 00:00:00.000 |
First Sunday in April 01:00:00.000 |
"TZI"=hex:94,02,00,00,00,00,00,00,c4,ff,ff,ff,00,00,04,00,00,00,01,00,01,00,00,00,00,00,00,00,00,00,09,00,00,00,05,00,00,00,00,00,00,00,00,00 |
In addition to these changes, the August 2011 DST cumulative update contains revisions for the following time zones:
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Updated the UTC offsets and removed DST for the time zones that are listed in the table.
|
Time Zone |
Old |
New |
|---|---|---|
|
Russian Standard Time |
(UTC +3:00) Moscow, St Petersburg, Volgograd |
(UTC +4:00) Moscow, St Petersburg, Volgograd |
|
Ekaterinburg Standard Time |
(UTC +5:00) Ekaterinburg |
(UTC +6:00) Ekaterinburg |
|
N. Central Asia Standard Time |
(UTC +6:00) Novosibirsk |
(UTC +7:00) Novosibirsk |
|
North Asia Standard Time |
(UTC +7:00) Krasnoyarsk |
(UTC +8:00) Krasnoyarsk |
|
North Asia East Standard Time |
(UTC +8:00) Irkutsk |
(UTC +9:00) Irkutsk |
|
Yakutsk Standard Time |
(UTC +9:00) Yakutsk |
(UTC +10:00) Yakutsk |
|
Vladivostok Standard Time |
(UTC +10:00) Vladivostok |
(UTC +11:00) Vladivostok |
|
Magadan Standard Time |
(UTC +11:00) Magadan |
(UTC +12:00) Magadan |
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Kaliningrad Standard Time [Display Name "(UTC+3:00) Kaliningrad"]: A new Windows time zone was created, and it has the display name "(UTC+3:00) Kaliningrad." This time zone does not observe daylight saving time.
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Newfoundland Standard Time [Display Name "(UTC-3:30) Newfoundland"]: The DST start time and end time were updated from 12:01 A.M. to 2:00 A.M.
|
Time zone key name |
Display name |
2011 DST start |
2011 DST end |
TZI subkey |
|---|---|---|---|---|
|
Russian Standard Time |
(UTC +4:00) Moscow, St. Petersburg, Volgograd |
None |
None |
“TZI”=hex: 10,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
Ekaterinburg Standard Time |
(UTC +6:00) Ekaterinburg |
None |
None |
“TZI”=hex:98,fe,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
N. Central Asia Standard Time |
(UTC +7:00) Novosibirsk |
None |
None |
“TZI”=hex:5c,fe,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
North Asia Standard Time |
(UTC +8:00) Krasnoyarsk |
None |
None |
“TZI”=hex:20,fe,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
North Asia East Standard Time |
(UTC +9:00) Irkutsk |
None |
None |
“TZI”=hex:e4,fd,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
Yakutsk Standard Time |
(UTC +10:00) Yakutsk |
None |
None |
“TZI”=hex:a8,fd,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
Vladivostok Standard Time |
(UTC +11:00) Vladivostok |
None |
None |
“TZI”=hex:6c,fd,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
Magadan Standard Time |
(UTC +12:00) Magadan |
None |
None |
“TZI”=hex:30,fd,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
Kaliningrad Standard Time |
(UTC +3:00) Kaliningrad |
None |
None |
“TZI”=hex:4c,ff,ff,ff,00,00,00,00,c4,ff,ff,ff,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 |
|
Newfoundland Standard Time |
(UTC-3:30) Newfoundland |
Second Sunday in March 00:01:00:000 |
First Sunday in November 02:00:00:000 |
“TZI”=hex:d2,00,00,00,00,00,00,00,c4,ff,ff,ff,00,00,0b,00,00,00,01,00,02,00,00,00,00,00,00,00,00,00,03,00,00,00,02,00,00,00,01,00,00,00,00,00 |
Known issues
After you install this update, conversion of old 2011 winter dates from UTC to local time for the affected Russian time zones uses the incorrect offset (+4 instead of +3 in the case of Russian Standard time). This issue affects the old winter dates only (January 2011 until the start of DST in 2011).
Windows XP
Prerequisites
You must have Windows XP Service Pack 3 (SP3) installed to apply this update. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
322389 How to obtain the latest Windows XP service pack
Restart requirement
You may have to restart the computer after you apply this update.
Update replacement information
Note You can install this cumulative update rollup even after you have installed any of the following previously released updates. This update replaces the following update:
2443685 December 2010 cumulative time zone update for Microsoft Windows operating systems
Windows Server 2003
Prerequisites
You must have Windows Server 2003 SP2 installed to apply this update. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
889100 How to obtain the latest service pack for Windows Server 2003
Restart requirement
You may have to restart the computer after you apply this update.
Update replacement information
Note You can install this cumulative update rollup even after you have installed any of the following previously released updates. This update replaces the following update:
2443685 December 2010 cumulative time zone update for Microsoft Windows operating systems
Windows Vista or Windows Server 2008
Prerequisites
You must have Windows Vista or Windows Server 2008 Service Pack 2 installed to apply this update.
Restart requirement
You may have to restart the computer after you apply this update.
Update replacement information
Note You can install this cumulative update rollup even after you have installed any of the following previously released updates. This update replaces the following update:
2443685 December 2010 cumulative time zone update for Microsoft Windows operating systems
Windows 7 or Windows Server 2008 R2
Prerequisites
No prerequisites are required to apply this update. The same package installs both on the RTM version as well as the SP1 versions of Windows 7 and Windows Server 2008 R2.
Restart requirement
You may have to restart the computer after you apply this update.
Update replacement information
Note You can install this cumulative update rollup even after you have installed any of the following previously released updates. This update replaces the following update:
2443685 December 2010 cumulative time zone update for Microsoft Windows operating systems
