Simple Objective-C RFC3339 parser

DateUtil.m

/*
Inspired by http://cokere.com/RFC3339Date.txt
All rights deserve to Chad Okere
*/

@implementation DateUtil

+ (NSDate *)parseRFC3339Date:(NSString *)date {
    NSDate *parsedDate = nil;
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

    NSRange zRange = [date rangeOfString:@"Z"];
    if (zRange.length > 0 && zRange.location == date.length - 1) {
        [dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];
        [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss'Z'"];
        parsedDate = [dateFormatter dateFromString:date];
        if (parsedDate == nil) {
            [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSSSSS'Z'"];
            dateFormatter.lenient = YES;
            parsedDate = [dateFormatter dateFromString:date];
        }
        return parsedDate;
    } else {

        [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ssZZZZZ"];
        parsedDate = [dateFormatter dateFromString:date];
        if (parsedDate == nil) {
            [dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSSSSSZZZZZ"];
            dateFormatter.lenient = YES;
            parsedDate = [dateFormatter dateFromString:date];
        }
        return parsedDate;
    }
}

@end

Updated to handle +08:00 time zones

See test results here : http://ideone.com/B9L5PL