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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
2011 Russian Changes
August 2011 Cumulative Update
Daylight Saving Time
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Microsoft Daylight Saving Time & Time Zone Blog
daylight savings time
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...
9 Dec 2014
Update for Russian Time Zone Changes is Now Available
Please visit http://support.microsoft.com/kb/2998527 for the update details.
24 Sep 2014
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...
22 Aug 2014
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...
12 Aug 2014
Updates Available for Egypt DST Ramadan Exception in 2014
The government of Egypt has decided to pause DST during the holy month of Ramadan in 2014, from Friday, June 27 at 00:00 to Friday, August 1 at 00:00. Fix it solutions for Windows have been released to address this change, and you can find the details and download them here: http://support.microsoft...
24 Jul 2014
Updates Available for Morocco DST Ramadan Exception in 2014
The government of Morocco has decided to pause DST during the holy month of Ramadan in 2014, from Saturday, June 28 at 3AM to Saturday, August 2 at 2AM. Fix it solutions for Windows have been released to address this change, and you can find the details and download them here: http://support.microsoft...
24 Jul 2014
Microsoft Daylight Saving Time and Time Zone update now available (December 2008)
The most recent cumulative updates to daylight saving time (DST) and world time zones (TZ) are now available for supported versions of the following products. For the latest DST updates on each of these products, please visit the following Microsoft Web site: Microsoft Daylight Saving Time Support page...
30 Jan 2009
NOTICE: Hotfix available for Israel and Libya time zone
This hotfix contains three new changes in Windows Daylight Saving Time support: The government of Israel extended Daylight Saving Time to a period of 193 days. Starting 2013, DST in Israel will now begin on the Friday before the last Sunday in March, and it will end on the first Sunday after...
4 Feb 2013
Advisory: Mauritius Discontinues Daylight Saving Time in 2009
There will be no daylight saving time (DST) in Mauritius in 2009 despite positive reports from a recent DST trial, which began in October 2008 and ended in March 2009. Mauritius’ government announced that it would not repeat last year’s DST trial. Microsoft Windows provides a way to prevent machines...
24 Nov 2009
Microsoft Windows Daylight Saving Time and Time Zone update now available (December 2009)
The most recent cumulative update to daylight saving time (DST) and world time zones (TZ) is now available for supported versions of the Windows Operating System via Microsoft Download Center and Windows Update. Microsoft product teams follow a semi-annual DST and TZ update schedule, which follows...
24 Nov 2009
Notice: Microsoft Windows Daylight Saving Time and Time Zone update now available (February 2010)
The most recent cumulative update to daylight saving time (DST) and world time zones (TZ) is now available for supported versions of the Windows Operating System via Microsoft Download Center and Windows Update. For more information about this cumulative DST and TZ update, visit the following Microsoft...
23 Feb 2010
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 "...
2 Dec 2010
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...
31 Oct 2008
Advisory: Syria to Observe Daylight Saving Time starting March 26
Advisory: Syria to Observe Daylight Saving Time starting March 26 The Syrian Arab News Agency (SANA) reported that daylight saving time in Syria will begin on March 26, 2009. NO reports yet as to when DST will end in Syria this year. The report states that The Syrian Ministers approved the suggestion...
27 Mar 2009
Advisory: Russia decides to make time zone changes in several regions
The Ministry of Industry and Trade of Russia plans to make time zone changes in several regions so they won’t return to summer time this sping. The draft resolutions are posted at: http://www.minprom.gov.ru/docs/ce/42 http://www.minprom.gov.ru/docs/ce/41 http://www.minprom.gov.ru/docs/ce/38...
25 Mar 2010
A hotfix is available to update the Daylight Saving Time for Paraguay, Fiji and Chile time zones - KB 981128
A Windows hotfix has been released to support the following DST changes: · Set DST start date for Paraguay at first Saturday of October at 23:59:59.999 and DST end date at second Saturday of April at 23:59:59.999 · Set DST start date for Fiji at fourth Sunday of October 2010 at 02:00:00.000...
10 Mar 2010
Notice: Hotfix Available for Morocco 2009 Daylight Saving Time
Morocco has announced the start of DST for 2009 on June 1st at midnight. The clock will move one hour forward at midnight between May 31st and June 1st, and then move one hour back at midnight between August 20th and August 21st in 2009. There was no DST for Morocco in 2009 prior to this update. ...
27 May 2009
Daylight Saving Time and Time Zone update for Windows now available (December 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 and Windows Update.. These updates support versions...
5 Jan 2009
Bangladesh decides to cancel Daylight Saving Time originally scheduled to start on April 1st, 2010
The Bangladesh cabinet cancelled its earlier decision to reintroduce daylight saving time from April 1st, 2010, considering its repercussion on people. Customers in Bangladesh can switch their computers to the “Central Asia Standard Time” time zone with the display name of “(UTC+06:00) Astana” which...
25 Mar 2010
Hotfix Available for Bangladesh 2009/2010 Daylight Saving Time
12/28/2009 Update: As announced today, Bangladesh has decided to end DST on December 31, 2009. This hotfix does not address this most recent change on Bangladesh's time. Please stay tuned for more information on Bangladesh's newest DST change. According to an announcement from the Bangladesh government...
11 Dec 2009
Guidance for Argentina on Upcoming Daylight Saving Time Implementation for 2008-2009
How to Adjust Windows PC Operating Systems and its effects on Exchange/Outlook Background – Argentina DST 2008/2009 changes The Argentinean government has announced new start and end dates for the Daylight Saving Time in Argentina for the period of 2008-2009. The new daylight saving time for...
17 Oct 2008
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...
18 Apr 2009
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...
14 Apr 2009
Microsoft Announces Update to Support Policy for Daylight-Saving Time or Time Zone Changes
As part of Microsoft’s continued focus on customer satisfaction, we are announcing a revision to the Microsoft Support Lifecycle policy regarding the availability of Daylight Saving Time (DST) or Time Zone (TZ) updates during the Extended Support phase. DST or TZ updates are important because unless...
3 Sep 2009
Notice: A hotfix is available to update the Daylight Saving Time for the “(UTC) Casablanca” time zone for Windows Operating Systems
Morocco will observe daylight saving time in 2010. Microsoft has produced a hotfix to implement this change. If interested in downloading this hotfix, please refer to KB 982615 titled: "A hotfix is available to update the Daylight Saving Time for the "(UTC) Casablanca" time zone for Windows Operating...
21 Apr 2010
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