code: public static Timestamp forDateZ(Date date)
      {
          if (date == null) return null;
          long millis = date.getTime();
          return new Timestamp(millis, UTC_OFFSET);
      }
docs: Converts a {@link Date} to a Timestamp in UTC representing the same
  point in time.
  <p>
  The resulting Timestamp will be precise to the millisecond.
  
  @return
  a new Timestamp instance, in UTC, precise to the millisecond;
  {@code null} if {@code date} is {@code null}