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

Browse by Tags

Related Posts
  • Blog Post: December 2014 DST Cumulative Update for Windows Operating Systems

    The December 2014 DST Cumulative Update for Windows Operating Systems is now available. It contains the following changes: Russia time zones Russia has changed its existing time zones on October 26, 2014. This change included seven updated time zones, three new time zones, and two existing time...
  • Blog Post: Update for Russian Time Zone Changes is Now Available

    Please visit http://support.microsoft.com/kb/2998527 for the update details.
  • Blog Post: Announcement: Update for Russian Time Zone Changes

    According to a recent law [ link ] passed by the government of Russia, Russia will change its existing time zones on October 26, 2014. Microsoft is planning to release an update for Windows on September 23, 2014 to address this change, with details below: 1. Update 7 existing time zones to match...
  • Blog Post: August 2014 DST Cumulative Update for Windows Operating Systems

    The August 2014 DST Cumulative Update for Windows Operating Systems has been published on Microsoft Download Center. It contains the following changes: Jordan Standard Time: For 2014 and onward, Jordan has changed its DST Start time from the last Thursday in March at midnight to the last Friday...
  • Blog Post: Updates available for Paraguay, Turkey and Chile time zones

    This time zone update for Windows Operating Systems has been published on Microsoft Download Center. It contains the following changes: Chile Chile has changed its DST start date to September 7 at 00:00:00 and DST end date to April 27 at 00:00:00 for the year 2014. Turkey ...
  • Blog Post: December 2011 DST Cumulative Update for Windows operating systems

    The December 2011 DST Cumulative update for Windows operating systems has been published on Microsoft Download Center. It contains the following changes: Kaliningrad Standard Time: As previously announced in KB2625508 , Belarus has decided to discontinue daylight saving time from 2011 and stay...
  • Blog Post: December 2013 DST Cumulative Update for Windows Operating Systems

    The December 2013 DST Cumulative Update for Windows Operating Systems has been published on Microsoft Download Center. It contains the following changes: Mid-Atlantic Time: The Mid-Atlantic time zone is deprecated in this update. Morocco Standard Time: Morocco extended the 2013 DST...
  • 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: August 2013 DST Cumulative Update for Windows operating systems

    The August 2013 DST Cumulative Update for Windows Operating Systems has been published on Microsoft Download Center. It contains the following changes: Libya Standard Time: New DST starts on the last Friday of March at 2:00 A.M., and ends on the last Friday of October at 2:00 A.M. This new...
  • Blog Post: October 2012 DST Cumulative Update for Windows operating systems

    The October 2012 DST Cumulative update for Windows operating systems has been published on Microsoft Download Center. This year’s October Update replaces the normal August Cumulative Update. It contains the following changes: E. Europe Standard Time: The display name for this time zone...
  • Blog Post: December 2010 DST Cumulative Update for Windows operating systems

    The December 2010 DST Cumulative Update for Windows operating systems focuses on the following changes : Magadan : o A new timezone has been created for Magadan. The Magadan timezone has support for Daylight Saving Time, with 2011 DST running from March to October. o The existing timezone "...
  • Blog Post: August 2011 DST Cumulative Update for Windows operating systems

    The August 2011 DST Cumulative Update for Windows operating systems contains the following changes : NewFoundland : Newfoundland’s DST start and end times have been updated to 2AM from 12:01 AM. The rest of the Newfoundland time zone schedule is unchanged. Russian Time Zones ...
  • Blog Post: December 2012 DST Cumulative Update for Windows operating systems

    The December 2012 DST Cumulative update for Windows operating systems has been published on Microsoft Download Center. It contains the following changes: Bahia Standard Time: Starting in 2012, Bahia Standard Time will no longer have DST. Azores Standard Time: Changes reflect the end of...