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: 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...
  • Blog Post: 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...
  • Blog Post: Time Zones not updating on Windows 2003, Windows XP or Windows 2000

    After applying 931836 time zone changes don’t take effect until you manually change the time zone Symptom: We have isolated reports that Windows 2000, XP, and 2003 may find that their Windows clocks do not move forward for DST, even with fixes applied from 931836 or 928388. · Explanation...
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