Summary

In accordance with recently passed Russian law, the following regions in Russia were scheduled to switch time zones on March 27, 2016, at 02:00 local time. Microsoft has released an update to Windows, dated Tuesday, April 12, 2016, to reflect these changes.

Region

Old time zone offset

New time zone offset

Astrakhan Oblast

UTC+3

UTC+4

Ulyanovsk Oblast

UTC+3

UTC+4

Altai Krai

UTC+6

UTC+7

Altai Republic

UTC+6

UTC+7

Zabaykalsky Krai

UTC+8

UTC+9

Sakhalin Oblast

UTC+10

UTC+11

Resolution

  • The update that is described in this article changes the time zone data to accommodate daylight saving time (DST) changes in several countries.

    This is a cumulative update rollup that includes all previous Windows time zone changes. For more information about how DST changes may affect other Microsoft products, go to the following Microsoft websites:

    General information about DST

    914387 How to configure daylight saving time for Microsoft Windows operating systems

  • When you apply this update, you may receive a message that resembles the following:

    Update cannot be installed as a newer or same time zone update has already been installed on the system.This message indicates that either you have already applied the correct update or Windows Updates or Microsoft Update has automatically installed this update. No additional action is required to update the Windows operating system.

How to get this updateThe following files are available for download and installation from the Microsoft Download Center.



Operating system

Update

All supported x86-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows 8.1

Download Download the package now.

All supported x64-based versions of Windows Server 2012 R2

Download Download the package now.

All supported x64-based versions of Windows Server 2012

Download Download the package now.

All supported x86-based versions of Windows 7

Download Download the package now.

All supported x64-based versions of Windows 7

Download Download the package now.

All supported x64-based versions of Windows Server 2008 R2

Download Download the package now.

All supported IA-based versions of Windows Server 2008 R2

Download Download the package now.

All supported x86-based versions of Windows Vista

Download Download the package now.

All supported x64-based versions of Windows Vista

Download Download the package now.

All supported x86-based versions of Windows Server 2008

Download Download the package now.

All supported x64-based versions of Windows Server 2008

Download Download the package now.

All supported IA-based versions of Windows Server 2008

Download Download the package now.



For more information about how to download Microsoft support files, click the following article number to go to the article in the Microsoft Knowledge Base:

119591 How to get Microsoft support files from online servicesVirus-scan claim

Microsoft scanned these files for viruses. Microsoft used the most current virus-detection software that was available on the date that the files were posted. The files are stored on security-enhanced servers that help prevent any unauthorized changes to the files.

PrerequisitesWindows 8.1 and Windows Server 2012 R2

To apply this update, you must have update 2919355 installed. For more information about how to get this update, click the following article number to go to the article in the Microsoft Knowledge Base:

2919355 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update: April 2014Windows 8 and Windows Server 2012

No prerequisites are required to apply this update.

Windows 7 and Windows Server 2008 R2

No prerequisites are required to apply this update. The same package installs both on the RTM version and the Service Pack 1 versions of Windows 7 and Windows Server 2008 R2. For more information about how to get a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to go to the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2Windows Server 2008

To apply this update, you must be running Windows Vista Service Pack 2 (SP2) or Windows Server 2008 SP2.

For more information about how to get a Windows Server 2008 service pack, click the following article number to go to the article in the Microsoft Knowledge Base:

968849 How to get the latest service pack for Windows Server 2008

Registry informationTo apply this update, you don't have to make any changes to the registry.

Restart requirementYou must restart the computer after you install this cumulative update.

Changes to Windows time zone data

This update includes the following changes and additions. Users in the affected regions can switch to these new time zones after the update is installed.

New Time Zones

Astrakhan Oblast & Ulyanovsk Oblast

Time zone key / ID

Astrakhan Standard Time

English display name

(UTC+04:00) Astrakhan, Ulyanovsk

Time zone offset (before transition)

UTC+3

Time zone offset (after transition)

UTC+4


Altai Republic & Altai Krai

Time zone key / ID

Altai Standard Time

English display name

(UTC+07:00) Barnaul, Gorno-Altaysk

Time zone offset (before transition)

UTC+6

Time zone offset (after transition)

UTC+7


Zabaykalsky Krai

Time zone key / ID

Transbaikal Standard Time

English display name

(UTC+09:00) Chita

Time zone offset (before transition)

UTC+8

Time zone offset (after transition)

UTC+9


Sakhalin Oblast

Time zone key / ID

Sakhalin Standard Time

English display name

(UTC+11:00) Sakhalin

Time zone offset (before transition)

UTC+10

Time zone offset (after transition)

UTC+11

Changes to Existing Time ZonesThese changes affect the display name only. No time changes will be introduced.

Time zone key / ID

Old display name

New display name

Kaliningrad Standard Time

(UTC+02:00) Kaliningrad (RTZ 1)

(UTC+02:00) Kaliningrad

Russian Standard Time

(UTC+03:00) Moscow, St. Petersburg, Volgograd (RTZ 2)

(UTC+03:00) Moscow, St. Petersburg, Volgograd

Russia Time Zone 3

(UTC+04:00) Izhevsk, Samara (RTZ 3)

(UTC+04:00) Izhevsk, Samara

Ekaterinburg Standard Time

(UTC+05:00) Ekaterinburg (RTZ 4)

(UTC+05:00) Ekaterinburg

North Central Asia Standard Time

(UTC+06:00) Novosibirsk (RTZ 5)

(UTC+06:00) Novosibirsk

North Asia Standard Time

(UTC+07:00) Krasnoyarsk (RTZ 6)

(UTC+07:00) Krasnoyarsk

North Asia East Standard Time

(UTC+08:00) Irkutsk (RTZ 7)

(UTC+08:00) Irkutsk

Yakutsk Standard Time

(UTC+09:00) Yakutsk (RTZ 8)

(UTC+09:00) Yakutsk

Vladivostok Standard Time

(UTC+10:00) Vladivostok, Magadan (RTZ 9)

(UTC+10:00) Vladivostok

Russia Time Zone 10

(UTC+11:00) Chokurdakh (RTZ 10)

(UTC+11:00) Chokurdakh

Russia Time Zone 11

(UTC+12:00) Anadyr, Petropavlovsk-Kamchatsky (RTZ 11)

(UTC+12:00) Anadyr, Petropavlovsk-Kamchatsky



File informationFor a list of the files that are provided in this update, download the file information for update 3148851.

References

For an official policy statement about these changes, see the following Microsoft Daylight Saving Time & Time Zone Blog article:

Time Zone Updates for RussiaFor general Windows support for time zone and daylight saving time issues, go to the following Microsoft website:

Daylight Saving Time Help and Support Center

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