code: private static String formatUTCDateAsLocalDateTime(Date javaDate) {
      // Now back from start of day in UTC to LocalDateTime to express that we don't know the
      // timezone.
      LocalDateTime localDateTime = javaDate.toInstant().atZone(UTC).toLocalDateTime();
      // And format to string
      return localDateTime.toString();
    }
docs: Formats parsed Date as LocalDateTime string at zone UTC to express that we don't know the
  timezone.
  
  @param javaDate Parsed Date representing start of day in UTC
  @return Formatted {@link LocalDateTime} string of the java.util.Date