Time Zone Problems with NSDate+InternetTime Class

i'm using class of nsdate+internettime parsing xmls calendars, blogs, etc. in central time zone , when view tableview showing each rss item, time listed correct. however, if user in est shows hour later, , earlier times mountain , pacific time zones. ideas why may be? code parsing date is:

code:

nsstring *articledatestring = [item valueforchild:@"updated"];                 nsdate *articledate = [nsdate datefrominternetdatetimestring:articledatestring formathint:dateformathintrfc3339];

the code in class nsdate+internettime is:

code:

+ (nsdate *)datefrominternetdatetimestring:(nsstring *)datestring formathint:(dateformathint)hint { 	nsdate *date = nil; 	if (hint != dateformathintrfc3339) { 		// try rfc822 first 		date = [nsdate datefromrfc822string:datestring]; 		if (!date) date = [nsdate datefromrfc3339string:datestring]; 	} else { 		// try rfc3339 first 		date = [nsdate datefromrfc3339string:datestring]; 		if (!date) date = [nsdate datefromrfc822string:datestring]; 	} 	return date; } 

&

code:

+ (nsdate *)datefromrfc3339string:(nsstring *)datestring { 	 	// create date formatter 	static nsdateformatter *dateformatter = nil; 	if (!dateformatter) { 		nslocale *en_us_posix = [[nslocale alloc] initwithlocaleidentifier:@"en_us_posix"]; 		dateformatter = [[nsdateformatter alloc] init]; 		[dateformatter setlocale:en_us_posix]; 		[dateformatter settimezone:[nstimezone timezoneforsecondsfromgmt:0]]; 		[en_us_posix release]; 	} 	 	// process date 	nsdate *date = nil; 	nsstring *rfc3339string = [[nsstring stringwithstring:datestring] uppercasestring]; 	rfc3339string = [rfc3339string stringbyreplacingoccurrencesofstring:@"z" withstring:@"-0000"]; 	// remove colon in timezone ios 4+ nsdateformatter breaks. see https://devforums.apple.com/thread/45837 	if (rfc3339string.length > 20) { 		rfc3339string = [rfc3339string stringbyreplacingoccurrencesofstring:@":"  																 withstring:@""  																	options:0 																	  range:nsmakerange(20, rfc3339string.length-20)]; 	} 	if (!date) { // 1996-12-19t16:39:57-0800 		[dateformatter setdateformat:@"yyyy'-'mm'-'dd't'hh':'mm':'sszzz"];  		date = [dateformatter datefromstring:rfc3339string]; 	} 	if (!date) { // 1937-01-01t12:00:27.87+0020 		[dateformatter setdateformat:@"yyyy'-'mm'-'dd't'hh':'mm':'ss.ssszzz"];  		date = [dateformatter datefromstring:rfc3339string]; 	} 	if (!date) { // 1937-01-01t12:00:27 		[dateformatter setdateformat:@"yyyy'-'mm'-'dd't'hh':'mm':'ss"];  		date = [dateformatter datefromstring:rfc3339string]; 	} 	if (!date) nslog(@"could not parse rfc3339 date: \"%@\" possibly invalid format.", datestring); 	return date; 	 } 

i love have shows same time time zones. put in app times calendar events in est or whatever. thoughts?

update:
in cellforrowatindexpath of tableview had:

code:

nsdateformatter * dateformatter = [[[nsdateformatter alloc] init] autorelease];      [dateformatter settimestyle:nsdateformattermediumstyle];     [dateformatter setdatestyle:nsdateformattermediumstyle];     nsstring *articledatestring = [dateformatter stringfromdate:entry.articledate];     cell.textlabel.text = entry.articletitle;      cell.detailtextlabel.text = [nsstring stringwithformat:@"%@ - %@", articledatestring, entry.blogtitle];

i added in blank line is:

code:

    [dateformatter settimezone:[nstimezone timezonewithabbreviation:@"est"]];

i tried messing sorts of different time zones, , never changed, yet if changed time zone of phone, times change.

 

or let me ask way. possible use dateformatter take time being returned, , either add or subtract hours it?

 

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