Windows 11 shows wrong time zone but correct time after DST switch

Question

Windows 11 shows wrong time zone but correct time after DST switch

Tilman Schmidt 120

After the start of daylight saving time last Sunday, all Windows 11 computers in our domain (as well as my private one which isn't domain joined) report their time zone in Settings > Time & language > Date & time as "(UTC+01:00)" which is incorrect. I am living in the EU which has Central European Time and daylight saving time is UTC+2.

However the clock has correctly been advanced by an hour so the actual displayed time of day is indeed UTC+02:00. (18:04 right now at 16:04Z.)

This has the unfortunate side effect that calendar entries originating from different time zones (such as meeting invitations from Microsoft support) show up in my calendar one hour too early. For example, a meeting scheduled for 14:00 UTC appears in my calendar at 15:00 when 16:00 would be correct.

At the same time, the Settings > Time & language > Date & time dialog shows last successful time synchronization 01/04/2025 08:49:01, well after the DST switch.

How is this even possible? As far as I know, NTP time synchronization done in UTC, so if Windows thinks it is in UTC+1 then the time it displays should also be UTC+1.

And more importantly, how can this be fixed?

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Answer 1

Anonymous

Hello Tilman Schmidt，

Thank you for posting in Q&A forum.

How did you set daylight saving time last Sunday? You can try to stop daylight saving time temporarily and check if the problem disappears.

Then you can try to set daylight saving time based on the steps below.

User's image

Set time, date, and time zone settings in Windows

https://support.microsoft.com/en-us/windows/set-time-date-and-time-zone-settings-in-windows-dfaa7122-479f-5b98-2a7b-fa0b6e01b261#id0ebd=windows_11

I hope the information above is helpful.

If you have any questions or concerns, please feel free to let us know.

Best Regards,

Daisy Zhou

============================================

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Tilman Schmidt 120 Reputation points

2025-04-02T10:08:11.1166667+00:00
Hello @Anonymous ,

thanks for replying to my question.

I did not set anything last Sunday.

The affected machine's Date & time settings are:

Set time zone automatically: On

Set time automatically: On

Region: Germany

The displayed Time zone value is:

(Sorry, Windows doesn't allow copying the text so I had to screenshot it.)

Last Sunday, the displayed time of day shifted by an hour forward conforming to Daylight Saving Time automatically, without any action from my part.

The displayed Time zone value however did not follow. It remained as shown.

What do you propose that I do in order to stop daylight saving time temporarily?

Thanks,

Tilman
Anonymous

2025-04-03T03:40:31.2233333+00:00

Hello

Good day!
What do you propose that I do in order to stop daylight saving time temporarily?
A: You can try the steps below:

Make Set time zone automatically is switched Off, daylight saving time will not set automatically.

If Set time zone automatically is switched Off:

Make sure the option "Adjust for daylight saving time automatically" is switched Off, daylight saving time will not set automatically.

Make sure the option "Adjust for daylight saving time automatically" is switched Off, daylight saving time will need to be set manually, and then if needed, set the time manually.

Best Regards，
Daisy Zhou
Tilman Schmidt 120 Reputation points

2025-04-03T07:44:53.8433333+00:00

Hello, and thank you for your reply.

Make Set time zone automatically is switched Off, daylight saving time will not set automatically.

Make sure the option "Adjust for daylight saving time automatically" is switched Off,

When I did that, the time zone display stayed at "(UTC+01:00)" and the clock jumped back one hour to the correct value with respect to the displayed time zone, but both of course incorrect with respect to the legal time at my place.

daylight saving time will need to be set manually,

I found no way to set daylight saving time manually. There is no toggle "Daylight saving time: off/on". Nor is there an entry for Central European Summer Time in the time zones dropdown list. There are a couple of UTC+02:00 entries but they all refer to eastern European countries which have UTC+2 as their regular (non-DST) time zone. If I select one of those the display is correctly showing "(UTC+02:00)" and the correct time, but I'd expect it to become incorrect when daylight saving time ends and we go back to CET (UTC+1).

and then if needed, set the time manually.

I tried the "Sync now" button. It appeared to be thinking for a few seconds but changed nothing. I also switched off "Set time automatically" and manually changed the time to my actual (DST) time but it jumped back to the non-DST time as soon as I switched "Set time automatically" on again. Finally, when I switched "Adjust for daylight saving time automatically" back on, everything went back to the state before. (Clock showing UTC+2 but Time zone displayed as UTC+1.)

So sorry, problem not solved.

Best regards,

Tilman Schmidt

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Windows 11 shows wrong time zone but correct time after DST switch

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