firstWeekday The index of the first weekday of the receiver. Declarationvar firstWeekday: Int { get set } See AlsoGetting Calendar InformationcalendarIdentifierlocaletimeZonemaximumRange(of:)minimumRange(of:)minimumDaysInFirstWeekordinality(of:in:for:)range(of:in:for:)range(of:start:interval:for:)range(ofWeekendStart:interval:containing:)NSCalendar.Unit