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This article describes an update that makes time zone and daylight saving time (DST) changes in Windows for Morocco and the West Bank and Gaza. Before you install this update, see the Prerequisites section.

This update applies to the following operating systems:

  • Windows Server 2012 R2

  • Windows 8.1

  • Windows RT 8.1

  • Windows Server 2012

  • Windows Server 2008 R2 Service Pack 1 (SP1)

  • Windows 7 SP1

  • Windows Server 2008 Service Pack 2 (SP2)

  • Windows XP Embedded

Note To get the update for Windows 10 and Windows Server 2016, install the latest cumulative updates that are listed in the Windows 10 and Windows Server 2016 update history Knowledge Base article.

Changes by location


As it has in previous years, Morocco is suspending its daylight saving time (DST) period for the observation of the Muslim month of Ramadan from 03:00 on Sunday, May 13, 2018, to 02:00 on Sunday, June 17, 2018, in the Gregorian calendar.

During this period, clocks are turned back to Standard Time to shorten the evenings, making it easier for Muslims to observe the Ramadan fast during daylight hours.

On May 13, clocks are turned back at 03:00 to 02:00 to end the DST observation.
On June 17, clocks are set ahead at 02:00 to 03:00 to resume the DST observation.

Time zone key name

Display name

DST ends

DST resumes

Morocco Standard Time

(UTC+00:00) Casablanca

May 13, 2018 at 03:00

June 17. 2018 at 02:00

West Bank and Gaza

Updates are now available for the West Bank and Gaza. The interim guidance that we provided was to use the "(UTC+03:00) Turkey" time zone. However, users can revert to "(UTC+02:00) Gaza, Hebron" after the latest updates are installed.

Time zone key name

New time zone display name

Gaza Standard Time

(UTC+02:00) Gaza, Hebron

Update information

The update that is described in this article makes changes in the time zone and DST settings for Morocco and the West Bank and Gaza.

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.


Learn about the terminology that Microsoft uses to describe software updates.

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