[tz] Kazakhstan to shift from UTC+6 to UTC+5

[Tim Parenti]

On Wed, 24 Jan 2024 at 22:52, Andrey.Kazakevich at erg.kz <
Andrey.Kazakevich at erg.kz> wrote:

> Sorry, guys, another question – most of devices in our corporate
> environment are using (Astana +06:00) timezone in Microsoft Windows OS
> (Win10/11, Win Server 2019/2022).
>
> Have you some information how are they changing their list of timezones?
> What is process in their global list…
>

We are not involved with Microsoft's process for time zone data, no.  Once
they do announce a change, it will likely end up on their blog where they
document their DST and time zone updates at:
https://techcommunity.microsoft.com/t5/daylight-saving-time-time-zone/bg-p/DSTBlog


> Found some article (
> https://techcommunity.microsoft.com/t5/windows-it-pro-blog/how-windows-manages-time-zone-changes/ba-p/3852632
> ) but they declare 8 weeks change duration there…
>

Yes, it's a complex process to propagate time zone updates to devices
around the world.  It's why we recommend at least a year's notice ahead of
changes whenever possible.  Because this change is so soon, it is quite
likely that some devices won't receive updated time zone definitions in
time.

As a workaround, users may need to consider temporarily using Asia/Aqtobe
or Asia/Tashkent on devices that use tzdb, although these will mishandle
timestamps before the change.  On Windows, a similar approach may look like
using "(UTC+05:00) Ashgabat, Tashkent", as I believe that's already the
correct choice in western portions of Kazakhstan.

--
Tim Parenti

>
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