NSDateFormatter dateFromString返回一个特定日期的nil

Question

My date formatter return nil for one specific date: "20 Mar, 1998".

+ (NSDate*)dateFromString:(NSString*)date
{
    NSDateFormatter *df = [[NSDateFormatter alloc] init];
    [df setLocale:[NSLocale currentLocale]];
    if ([WPRConverter isUropeanMetrics])
        [df setDateFormat:@"dd MMM, yyyy"];
    else
        [df setDateFormat:@"MMM dd, yyyy"];
    return [df dateFromString:date];
}

I've checked near dates and all being returned correctly:

• "20 Mar, 1997"
• "20 Mar, 1999"
• "21 Mar, 1998"
• "19 Mar, 1998"

My Locale is "en_US".

Using [NSDateFormatter getObjectValue:forString:range:error:] gets me error:

The value “20 Mar, 1998” is invalid. FailureReason: The value “20 Mar, 1998” is invalid. RecoverySuggestion: Please provide a valid value. RecoveryOptions: Code: 2048

Answer 1

This is related to timeZone in Israel which had a day light saving time change (see http://timeanddate.com/time/change/israel/karmiel?year=1998 ).

Changing the time zone to GMT:

formatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0]

should fix the problem.