This post has been republished via RSS; it originally appeared at: Daylight Saving Time & Time Zone articles.
First published on TECHNET on Mar 21, 2017This update addresses the recent time zone changes in Tonga , Mongolia , Northern Cypress and Russian Saratov .
Windows 10 customers are recommended to install the latest cumulative update listed in our update history page .
Help page 4012864 has more details about this change and how it can be obtained for other versions of Windows.