public static String getFormattedTime3(final float time) {
        final SimpleDateFormat timestampFormat = new SimpleDateFormat(dateformat, Locale.US);
        timestampFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
        // yyyy-mm-ddThh:mm:ss.SSSZ
        final Date d = new Date((long) (time * 1000f));
        return timestampFormat.format(d);
    }
writes the track in a selected output format to a string

@param t the track to format
@return the formatted string
main/src/main/java/cgeo/geocaching/brouter/core/Formatter.java