Just keep your Windows Server 2012 R2 is up to date(or install the latest Monthly rollups), the daylight saving time (DST) patch will be installed automatically.
The following Microsoft article give us detailed information:
https://support.microsoft.com/en-us/help/914387/how-to-configure-daylight-saving-time-for-microsoft-windows-os
Besides, there is not a Windows version called Windows 11, I think you want to say Windows 10…
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