code: public static String getCurrentUTC() {
          SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.ENGLISH);
          sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
          return sdf.format(Calendar.getInstance().getTime());
      }
docs: Gets the current UTC date and time in 'yyyy-MM-dd'T'HH:mm:ss.SSS'Z'' format.
  
  @return Current UTC date and time.