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This article describes an update that makes time zone changes in Windows for São Tomé and Príncipe, and Qyzylorda, Kazakhstan. Before you install this update, see the Prerequisites section.

This update applies to the following operating systems:

  • Windows XP Embedded POSReady 2009

Note For information about this update for other versions of Windows, see KB 4490128.

Changes by location

São Tomé and Príncipe

Starting on January 1, 2019, at 02:00, São Tomé moved from the UTC+01:00 time zone to UTC+00:00.

Time zone key name

Display name

Old time zone

New time zone

São Tomé Standard Time

(UTC+00:00) São Tomé

(UTC+01:00) São Tomé

(UTC+00:00) São Tomé


On December 21, 2018 at 00:00 local time, the Qyzylorda region of Kazakhstan moved from the UTC+06:00 time zone to UTC+05:00. Customers can now switch to the new time zone for Qyzylorda, which is displayed as (UTC+05:00) Qyzylorda.

Time zone key name

Display name

Old time zone

New time zone

Qyzylorda Standard Time

(UTC+05:00) Qyzylorda

(UTC+06:00) Astana

(UTC+05:00) Qyzylorda

Update information

The update that is described in this article makes time zone changes in for São Tomé and Príncipe, and Qyzylorda, Kazakhstan.

For more information about how DST changes may affect other Microsoft products, go to the following Microsoft website:

General information about DST

For more information about how to configure DST settings in Windows, see 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 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.

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