Microsoft Daylight Saving Time & Time Zone Blog

This is the blog maintained by staff at Microsoft to provide general information, announcements and provide answers to Frequently Asked Questions (FAQs) related to daylight saving time (DST) and time zone (TZ) changes around the world. * Important Notice

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  • Blog Post: Notice: Optional Hotfix Available for Pakistan 2009 Daylight Saving Time

    As reported in various publications, including Daily Times , Pakistan has announced the start of DST for 2009 on April 15 th at midnight. This information is subject to change as it has not been officially confirmed by a Pakistani government source. Microsoft has produced a hotfix to implement...
  • Blog Post: Venezuela Time Zone Update Hotfix for the Windows OS is Available

    The government of Venezuela has announced a change to the time zone for the country. To date, Venezuela observed AST. The new time zone change will begin September 24, 2007, when clocks will move backwards 30 minutes, from UTC-4:00 GMT to UTC-4:30. This change begins at 11:59:59 PM local time on September...
  • Blog Post: DST VIDEOS NOW AVAILABLE!

    Steve Justice (Senior Escalation Engineer) and Joel Schaeffer (Escalation Engineer) from Microsoft Product Support have put together some instructional videos to assist your DST planning efforts. On-Demand (hosted by Channel9.MSDN.com) These videos can be streamed on-demand for viewing.  DST: Cumulative...
  • Blog Post: Argentina is changing their daylight saving time on December 30

    (cross posted from this blog entry ) This past week, the government of Argentina approved a new change to their observance of daylight saving time in the country effective this Sunday, December 30, 2007 at 12:00am to March 16th, 12:00 for Argentina. According to Reuters, "under the new law, which...
  • Blog Post: Webcast on Sept 14: daylight saving time changes in 2007

    Cross-posted from the the Exchange Team blog ... I wanted to let you know that there is going to be a DST related Webcast this coming Friday. Event details: Available on Friday, September 14th at 9am PT: Preparing for Daylight Saving Time: This Webcast will provide an overview of information...
  • Blog Post: Windows Mobile: Preventing Devices from "Falling Back" Early

    A recent update was posted to the Microsoft Daylight Saving Time & Time Zone hot topics page which details impacts to some users of certain Windows Mobile devices, who may have experienced an early changeover. A copy of that posting is found below: please refer to the information on the page and...
  • Blog Post: KB 932395 updated: Commerce Server 2002, Commerce Server 2007 for DST 2007

    Please note that for Microsoft Commerce Server 2002 and Commerce Server 2007, KB article 932395 has been updated. This article outlines how to update these Microsoft products to meet the updated time zone changes (including the changes to observation of DST in New Zealand) as outlined in KB 933360...
  • Blog Post: Notice: Ramadan Exception for Morocco DST

    As stated in the previous blog post , Microsoft has issued updates for Morocco introducing Daylight Saving Time in 2012 [ KB2698707 ]. Daylight time will be paused during the holy month of Ramadan. Due to the yearly fluctuation of the start and end dates of Ramadan during this time of year, it...
  • Blog Post: Late breaking changes in Egypt: DST changes in the country on September 7

    Advisory: Late breaking changes in Egypt : The government of Egypt has announced on August 23rd, 2007, a change in the observance of daylight saving time in the country stating that the time change will take place on September 7th at 1:00AM local time. Officially, the change occurs at 11:59:59 PM Local...
  • Blog Post: Daylight Saving Time and Time Zone update for Windows now available (August 2008)

    The most recent cumulative updates to daylight saving time (DST) and world time zones (TZ) for Windows are now available for supported versions of the Windows operating system. The cumulative updates have been released to the Microsoft Download Center. These updates support versions of Windows XP, Windows...
  • Blog Post: Announcement: daylight saving time ends in Morocco earlier, on September 1, 2008

    (cross posted from Announcement- Changes to daylight saving time in Morocco, earlier than later on September 1, 2008 ) We recently received news reports (via this link , in French) that the ministry for the Modernization of the public sector in Morocco issued a notice that the country has changed the...
  • Blog Post: Daylight Saving Time Begins Sunday, March 9, in the US and Canada

    [cross posted to http://blogs.msdn.com/mthree/archive/2008/03/07/dst-arrives-030708.aspx ] Daylight Saving Time begins in much of the US and Canada this weekend, as noted in more than 2,200 news articles today on March 9 , several weeks earlier than in years prior to 2007. As you may recall, last...
  • Blog Post: Chile announces an extension on their Daylight Saving Time for 2008

    The government of Chile announced on February 7, 2008, that their current daylight saving time will be extended in order to save energy. The new fall back date for the daylight saving period of 2007-2008 is: Daylight saving time ends: Last Saturday of March at 11:59:59PM Information is available...
  • Blog Post: Notice: Now also available for Windows XP and Windows Server 2003: Optional Hotfix Available for Pakistan 2009 Daylight Saving Time

    As reported in various publications, including Daily Times , Pakistan has announced the start of DST for 2009 on April 15 th at midnight. This information is subject to change as it has not been officially confirmed by a Pakistani government source. Last Monday a hotfix was released to implement...
  • Blog Post: Armenia cancels DST

    Disclaimer : The information in this document is written in response to an announcement by the government of Armenia about changes in the daylight saving time in Armenia for the year of 2012. The steps provided in this bulletin were created to mitigate the impacts that the daylight saving time...
  • Blog Post: Will update KB 933360 be released for WSUS deployment and will it be classified as an Update Rollup?

    Q: Will update KB 933360 be released for WSUS deployment and will it be classified as an Update Rollup? A: Yes, Microsoft Windows operating systems KB 933360 is now available ( http://support.microsoft.com/kb/933360/ ), " August 2007 cumulative time zone update for Microsoft Windows operating systems...
  • Blog Post: updateD: Hot Topics for Daylight Saving Time changes page

    The 'Hot Topics for Daylight Saving Time changes' page at http://support.microsoft.com/gp/dst_hottopics has been updated: Daylight Saving Time and Time Zone update for Windows now available (revised August 12, 2008) The most recent cumulative updates to daylight saving time (DST) and world time zones...
  • Blog Post: August 2007 cumulative time zone update for Microsoft Windows operating systems now available

    Please note: If you referenced the February 2007 cumulative time zone update for Microsoft Windows operating systems KB article 931836 , please note that there is a new update now available. This Knowledge Base article has been replaced by the update that is described in Microsoft Knowledge Base article...
  • Blog Post: Advisory: Potential changes to Daylight Saving Time in Iraq

    Microsoft has learned of a potential change to the observance of Daylight Saving Time (DST) in Iraq that may impact customers using the Baghdad time zone. An early, unsubstantiated report is that the Ministry of Iraq has decided that the country will no longer observe DST as they have in prior years...
  • Blog Post: Pakistan: Daylight saving time ends on November 1 at midnight

    Daylight saving time ends this weekend in Pakistan. Late in August 2008, it was announced that Pakistan's daylight saving time (DST) would be extended to midnight between October 31 and November 1, 2008. In May of 2008, Pakistan introduced the observance of DST for this year for the first time...
  • Blog Post: Technical "Deep-Dive" LiveMeeting today on DST and Time Zones

    Today we will host a Technical "Deep-Dive" Webcast... Monday, September 24, 2007 at 2:00pm Pacific This LiveMeeting Webcast will be hosted by members of our Microsoft DST Team to provide a technical overview of resources available to help prepare Microsoft products for the change to Daylight Saving Time...
  • Blog Post: Windows Hotfix Update now available for new Daylight Saving Time changes in Brazil

    To be posted to the Microsoft Daylight Saving Time & Time Zone Hot Topics page at http://support.microsoft.com/gp/dst_hottopics ... Brazil 2007-2008 Daylight Saving changes: The government of Brazil announced a change on September 20, 2007, in the observance of daylight saving time in the country...