2017 - Morocco Ramadan DST changes

Gilt für: Windows Server 2012 DatacenterWindows Server 2012 StandardWindows Server 2012 Essentials

This article describes an update that makes daylight saving time (DST) changes in Windows. Before you install this update, see the Prerequisites section.
This update applies only to the following operating systems:
  • Windows Server 2012
  • Windows Server 2008 R2 Service Pack 1 (SP1)
  • Windows 7 SP1
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows XP Embedded


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 21, 2017, to 02:00 on Sunday, July 2, 2017, 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 21, clocks are turned back at 03:00 to 02:00 to end DST observation.
On July 2, clocks are set ahead at 02:00 to 03:00 to resume DST observation.
Time zone key name Display name DST ends DST resumes
Morocco Standard Time (UTC+00:00) Casablanca May 21, 2017 at 03:00 July 2, 2017 at 02:00

DST information

The update that is described in this article suspends DST observation in Morocco for the observation of the Muslim month of Ramadan.

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

For more information about how DST changes may affect other Microsoft products, click the following article number to go to the article in the Microsoft Knowledge Base:

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 update

Microsoft Update Catalog

To get the stand-alone package for this update, go to the Microsoft Update Catalog website.

Note You must be running Microsoft Internet Explorer 6.0 or a later version.


To apply this update on Windows 7 or Windows Server 2008 R2, you must have Service Pack 1 for Windows 7 and for Windows Server 2008 R2 installed.

To apply this update on Windows Server 2008, you must have Service Pack 2 for Windows Vista and for Windows Server 2008 installed.
There are no prerequisites to install this update on Windows Server 2012 or on Windows XP Embedded.


Registry information

To apply this update, you do not have to make any changes to the registry.


Restart requirement

You do not have to restart the computer after you install this update.


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