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copied!<p>In your date Format tor u set wrong it`s be dd-MM-yyyy HH:mm:ss . may be that was the problem.. u get wrong date and not get answer i send litte bit code for get day diffrence. <p></p> <pre><code> NSDateFormatter *tempFormatter = [[[NSDateFormatter alloc]init]autorelease]; [tempFormatter setDateFormat:@"dd-MM-yyyy HH:mm:ss"]; NSDate *startdate = [tempFormatter dateFromString:@"15-01-2011 09:00:00"]; NSLog(@"startdate ==%@",startdate); NSDateFormatter *tempFormatter1 = [[[NSDateFormatter alloc]init]autorelease]; [tempFormatter1 setDateFormat:@"dd-MM-yyyy HH:mm:ss"]; NSDate *toDate = [tempFormatter1 dateFromString:@"20-01-2011 09:00:00"]; NSLog(@"toDate ==%@",toDate); int i = [startdate timeIntervalSince1970]; int j = [toDate timeIntervalSince1970]; double X = j-i; int days=(int)((double)X/(3600.0*24.00)); NSLog(@"Total Days Between::%d",days); </code></pre> <hr> <p><strong>Edit 1:</strong></p> <p>we can find date difference using following function :</p> <pre><code>-(int)dateDiffrenceFromDate:(NSString *)date1 second:(NSString *)date2 { // Manage Date Formation same for both dates NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"dd-MM-yyyy"]; NSDate *startDate = [formatter dateFromString:date1]; NSDate *endDate = [formatter dateFromString:date2]; unsigned flags = NSDayCalendarUnit; NSDateComponents *difference = [[NSCalendar currentCalendar] components:flags fromDate:startDate toDate:endDate options:0]; int dayDiff = [difference day]; return dayDiff; } </code></pre> <p>from Abizern`s ans. find more infromation for NSDateComponent <a href="https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSDateComponents_Class/Reference/Reference.html" rel="nofollow"><strong>here.</strong></a></p>

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