code: protected static String fromTime(final long time) {
  		Date date = new Date(time);
  		// Waiting for Java 7: SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX");
  		String formatted = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ").format(date);
  		return formatted.substring(0, 22) + ":" + formatted.substring(22);
  	}
docs: Transform time into ISO 8601 string.