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();
  }
  
  long sysTime() {
    ret clockTimeToSystemTime(date);
  }
  
  Duration minusAsDuration(Timestamp ts) {
    ret Duration.ofMillis(minus(ts));
  }
}