https://learn.microsoft.com/en-us/dotnet/api/system.globalization.umalquracalendar?view=netframework-4.8.1&viewFallbackFrom=net-9.0
UmAlQuraCalendar Class (System.Globalization) | Microsoft Learn
Represents the Saudi Hijri (Um Al Qura) calendar.
class systemglobalizationmicrosoftlearn
https://learn.microsoft.com/en-us/dotnet/api/system.globalization.umalquracalendar?view=netframework-4.8.1&redirectedfrom=MSDN
UmAlQuraCalendar Class (System.Globalization) | Microsoft Learn
Represents the Saudi Hijri (Um Al Qura) calendar.
class systemglobalizationmicrosoftlearn