end {

  print "---------------------------------------------------------------- TIMEZONE";
  print "TZ is", ENV["TZ"];

  print "---------------------------------------------------------------- SEC2LOCALTILME";
  print sec2localtime(0);
  print sec2localtime(0.123456);
  print sec2localtime(-0.123456);
  print sec2localtime(0.123456, 6);
  print sec2localtime(-0.123456, 6);

}