Interim guidance for Greenland DST changes 2023

On November 27, 2022, the Greenland government made an official announcement about a Daylight-Saving Time (DST) time zone change. The country will not switch to Daylight Saving Time. Instead, Greenland’s standard time will permanently shift to UTC-2, which is the same time that has been observed since March 25, 2023. In 2024, Greenland will resume annual Daylight-Saving Time between March and October by temporarily shifting from UTC-2 to UTC-1.

The impact of this change is as follows:

• Since March 25, 2023, Greenland has observed the UTC-2 time, which is the country’s new standard time. 
• Late September 2023: Windows non-security preview release will include the update to address this time change for Windows 11 and Windows 10, version 22H2.
• October 10, 2023: Windows monthly quality release will include the update to address this time change for all supported versions of Windows. 
• March-October 2024: Greenland will temporarily shift to UTC-1 to observe the new annual Daylight-Saving Time. Devices updated with the September/October 2023 updates will reflect these changes automatically. 

How these time changes will be reflected, can also be understood from the table below:

The following platforms will receive an update to support this time zone change as part of September 2023 quality update or the October 2023 security update:

• Windows 11, version 22H2 
• Windows 11, version 21H2 
• Windows 10, version 22H2; Windows 10, 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 
• Windows Server 2008 SP2 
• Windows 8.1 
• Windows 7.0 SP1 

For additional information, please review our official policy page and How Windows manages time zone changes.