https://learn.microsoft.com/es-es/dotnet/api/system.globalization.datetimeformatinfo.shorttimepattern?view=netframework-4.8.1&viewFallbackFrom=netcore-3.1
DateTimeFormatInfo.ShortTimePattern Property (System.Globalization) | Microsoft Learn
Gets or sets the custom format string for a short time value.
property systemglobalizationmicrosoftlearn