srecord Timestamp(long date) implements Comparable<Timestamp> {

  *() { date = now(); }

  *(Date date) { if (date != null) this.date = date.getTime(); }

  long unixDate aka toLong() { ret date; }

  long unixSeconds() { ret unixDate()/1000; }

  toString { ret formatLocalDateWithSeconds(date); }

  // Hmm. Should Timestamp(0) be equal to null? Question, questions...

  public int compareTo(Timestamp t) {

    ret t == null ? 1 : cmp(date, t.date);

  }

  Timestamp plus(Seconds seconds) {

    ret plus(seconds?.getDouble());

  }

  Timestamp plus aka plusSeconds(double seconds) {

    ret Timestamp(date+toMS(seconds));

  }

  // returns milliseconds

  long minus(Timestamp ts) {

    ret unixDate()-ts.unixDate();

  }

  Timestamp minus(long milliseconds) {

    ret Timestamp(date-milliseconds);

  }

  long sysTime() {

    ret clockTimeToSystemTime(date);

  }

  Duration minusAsDuration(Timestamp ts) {

    ret Duration.ofMillis(minus(ts));

  }

}