If you are not able to manually change time in Windows 11/10, restart Windows Time Service, use Terminal to change time & ...

Add multiple clocks or change your entire system's time zone to your liking.

If you have a Windows account that does not have administrative privileges, however, you may find you still can't change the time zone via Windows Settings.

After updating to Windows 11 24H2, some users who don’t have administrative privileges are reporting that the Date & Time section of Windows Settings can’t change the time zone anymore.

Windows 11's January 28 optional update has fixed a long-standing issue in Windows 11 24H2 that prevents non-admin users from changing their time zone in Date & Time Settings.