https://learn.microsoft.com/en-gb/dotnet/api/system.globalization.datetimeformatinfo.invariantinfo?view=netframework-4.8.1&viewFallbackFrom=net-9.0
DateTimeFormatInfo.InvariantInfo Property (System.Globalization) | Microsoft Learn
Gets the default read-only DateTimeFormatInfo object that is culture-independent (invariant).
property systemglobalizationmicrosoftlearn