             
         case .Custom(let dateFormat):
             
-            let formatter = NSDate.formatter(format: dateFormat)
+            let formatter = NSDate.formatter(format: dateFormat, timeZone: zone)
             if let date = formatter.dateFromString(string as String) {
                 self.init(timeInterval:0, sinceDate:date)
             } else {

    A string representation based on a format.
    
    - Parameter format: The format of date can be .ISO8601(.ISO8601Format?), .DotNet, .RSS, .AltRSS or Custom(FormatString).
    - Returns The date string representation
    */
    func toString(format format: DateFormat) -> String
    {
        var dateFormat: String
        switch format {
        case .DotNet:
            let offset = NSTimeZone.defaultTimeZone().secondsFromGMT / 3600

    
    - Parameter fromString Date string i.e. "16 July 1972 6:12:00".
    - Parameter format The Date Formatter type can be .ISO8601(ISO8601Format?), .DotNet, .RSS, .AltRSS or Custom(String).
    - Parameter timeZone: The time zone to interpret fromString can be .Local, .UTC applies to Custom format only
    
    - Returns A new date
    */
    
    convenience init(fromString string: String, format:DateFormat, timeZone: TimeZone = .Local)
    {
        if string.isEmpty {
            self.init()
