NSIslamicCalendar Identifier for the Islamic calendar. Declarationlet NSIslamicCalendar: String See AlsoConstantsNSGregorianCalendarNSBuddhistCalendarNSChineseCalendarNSHebrewCalendarNSIslamicCivilCalendarNSJapaneseCalendarNSRepublicOfChinaCalendarNSPersianCalendarNSIndianCalendarNSISO8601Calendar