Samoa 2021 time zone update now available.
Published Mar 29 2024 10:52 AM 1,432 Views

Samoa observes West Samoa Time (WST), 13 hours ahead of UTC (UTC+13). The government of Samoa implemented support for Daylight Savings Time (DST) in 2010.

Eleven years later, on September 15, 2021, the Samoa government cabinet announced its intent to stop observing Daylight Saving Time on September 20, 2021.


The impact of this change is as follows:

Samoa observes the UTC+13 time zone throughout the year, and the DST is completely abolished for the country.


Microsoft is releasing the below Windows updates in support of this decision. This change is available in the March 2024 non-security preview update, released on March 26, 2024, for the newer versions of Windows 10 and 11. All other supported Windows versions will receive the update as part of the next monthly quality update scheduled for release on April 9, 2024. 


All Windows updates containing this fix have the following release note text:

“This update includes changes to Samoa daylight saving time (DST). “


The KB article numbers that support this change are listed below:


KB Article ID

Windows 11, version 22H2


Windows 10, version 22H2; Windows 10, version 21H2


Windows 11, version 21H2


Windows Server 2022


Windows 10 Enterprise LTSC 2019; Windows Server 2019


Windows 10 Enterprise LTSC 2016; Windows Server 2016


Windows 10 Enterprise 2015 LTSB


Windows Server 2012



Visit Interim guidance for Samoa DST changes 2021 for an earlier announcement of this change.


For Microsoft's official policy on DST and time zone changes, please see Daylight saving time help and support. For information on how to update Windows to use the latest global time zone rules, see How to configure daylight saving time for Microsoft Windows operating systems.


Version history
Last update:
‎Apr 09 2024 12:17 PM
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