The documentation for the Date and Time Programming Guide for iOS does not seem to be telling the truth, or perhaps I'm doing something wrong.
From https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/DatesAndTimes/Articles/dtHist.html "The Julian to Gregorian Transition NSCalendar models the transition from the Julian to Gregorian calendar in October 1582. During this transition, 10 days were skipped. This means that October 15, 1582 follows October 4, 1582. All of the provided methods for calendrical calculations take this into account, but you may need to account for it when you are creating dates from components. Dates created in the gap are pushed forward by 10 days. For example October 8, 1582 is stored as October 18, 1582." This code: NSCalendar *calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian]; DDLog(@"calendar = %@ ----------------------------------------",calendar.calendarIdentifier); NSDateComponents *components = [[NSDateComponents alloc] init]; [components setYear:1582]; [components setMonth:10]; [components setDay:10]; NSDate *date = [calendar dateFromComponents:components]; DDLog(@"components2 = %@",components); DDLog(@"date = %@",date); yields this result: DateLimit: calendar = gregorian ---------------------------------------- DateLimit: components2 = <NSDateComponents: 0x7be5b610> Calendar Year: 1582 Month: 10 Day: 10 DateLimit: date = 1582-10-10 07:52:58 +0000 Every other calculation I've tried seems to indicate that NSCalendar provides a proleptic Gregorian calendar - i.e. it does not adjust for the October 15 following October 4 transition. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
