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: 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: 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: 2012 DST changes for Morocco

    According to a recent law [ link ] passed by the government of Morocco, Morocco will follow DST each year from 2012. Microsoft is releasing a series of updates for Windows to address this change. You can find details of the updates, including order of installation here: [KB2698707] Note: All systems...