On 8/7/2026 11:09 AM, Tim Parenti via tz wrote:
On Fri, 7 Aug 2026 at 10:33, James Bellaire via tz <[email protected]> wrote:
Microsoft's blog has announced changes to support the time zone
changes in British Columbia and Alberta.
I had been starting to wonder when they would get to that.
Remaining versions of Windows will receive the update as part of
October 2026 monthly quality update."
Worth noting that October's "Patch Tuesday" is 13 October 2026, less
than three weeks before these changes take effect. Additionally, only
a handful of LTS releases of Windows 10 continue to enjoy support:
https://endoflife.date/windows
As workarounds on unsupported versions, users in British Columbia can
select Arizona for year-round UTC−7, while those in Alberta can select
Saskatchewan for year-round UTC−6.
Supported versions of Windows 11 should get a non-security update
September 22nd, remaining versions should get a quality update October
13th, per the blog. [1]
Microsoft is adding "(UTC-07:00) Pacific Time (British Columbia)" and
"(UTC-06:00) Mountain Time (Alberta)" display name time zones ("British
Columbia Standard Time" and "Alberta Standard Time" in the registry) for
the changes announced earlier this year.
Changes for Morocco's September 20th change to UTC+0 were scheduled for
this week's security update (released Sept 8th).
[1] https://techcommunity.microsoft.com/category/windows/blog/dstblog
