end {

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

  print "---------------------------------------------------------------- STRFTIME";
  print strftime(0.123456, "%Y-%m-%dT%H:%M:%SZ");
  print strftime(0.0,      "%Y-%m-%d %H:%M:%S");
  print strftime(0.0,      "%Y-%m-%d %H:%M:%3S");
  print strftime(0.0,      "%Y-%m-%d %H:%M:%S %Z");
  print strftime(0.0,      "%Y-%m-%d %H:%M:%S %z");
  print strftime(0.123456, "%Y-%m-%d %H:%M:%S %Z");
  print strftime(0.123456, "%Y-%m-%d %H:%M:%S %z");
  print strftime(0.0,      "%Y-%m-%d %H:%M:%S %Z");
  print strftime(0.0,      "%Y-%m-%d %H:%M:%S %z");
  print strftime(0.123456, "%s %N");
  print strftime(0.123456, "%S %O");

}