Rails standard time to object-c NSdate or vice versa

gistfile1.m

//Rails time to NSdate 
NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZ"];
NSDate *date = [df dateFromString:@"2013-04-07T21:19:14Z"]; 



//NSDate to String
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:@"MM/dd/yyyy HH:mm a"];
    
//Optionally for time zone converstions
[formatter setTimeZone:[NSTimeZone timeZoneWithName:@"Pacific/Auckland"]];
NSString *meeting_date = [formatter stringFromDate:meeting.meeting_date];