Making Hijri Calendar as primary calendar

Hi Apple community

in my mac, I can make Hijri (Islamic) calendar my primary calendar

I would suggest you add this feature for IOS/iPadOS, not as an alternative but as a PRIMARY.

I suggest adding another MAC/IOS/iPadOS feature, an alternative Gregorian calendar beside Primary Hijri Calendar.

Adding this feature will serve millions of people who depend on the Islamic calendar, and doing this from apple will show a good understanding of our needs

Thank You